• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Cotswold Garden Flowers

  • × Alcalthaea suffrutescens 'Parkallee' (d)
  • × Alcalthaea suffrutescens 'Parkrondell' (d)
  • × Alworthia 'Black Gem'
  • × Amarcrinum memoria-corsii 'Howardii'
  • × Amarcrinum 'Dorothy Hannibal'
  • × Amarine tubergenii 'Fletcheri'
  • × Amarine tubergenii 'Zwanenburg'
  • × Amarygia bidwillii 'Rosea'
  • × Chitalpa tashkentensis Summer Bells = 'Minsum'
  • × Graptoveria 'Ghostly'
  • × Heucherella 'Art Nouveau'
  • × Heucherella 'Brass Lantern' (PBR)
  • × Heucherella 'Butterscotch'
  • × Heucherella 'Redstone Falls' (PBR) (Falls Series)
  • × Hippeasprekelia 'Durga Pradhan'
  • × Hippeasprekelia 'Red Beauty'
  • × Phlebosia 'Nicolas Diamond'
  • × Sedeveria 'Harry Butterfield'
  • Abelia mosanensis
  • Abelia × grandiflora 'Kaleidoscope' (PBR) (v)
  • Abelia × grandiflora 'Panache' (v)
  • Abeliophyllum distichum
  • Abeliophyllum distichum Roseum Group
  • Abutilon × milleri hort.
  • Abutilon × milleri hort. 'Variegatum' (v)
  • Abutilon Red Trumpet = 'Oostredtrump' (PBR)
  • Abutilon 'Aphrodite'
  • Abutilon 'Kentish Belle'
  • Abutilon 'Nabob'
  • Abutilon 'Rose Glow'
  • Abutilon 'Souvenir de Bonn' (v)
  • Abutilon 'Tango'
  • Abutilon 'Waltz'
  • Acacia boormanii
  • Acacia dealbata 'Gaulois Astier'
  • Acacia retinodes 'Lisette'
  • Acanthus dioscoridis var. perringii
  • Acanthus eminens
  • Acanthus hirsutus
  • Acanthus hungaricus
  • Acanthus hungaricus 'White Lips'
  • Acanthus mollis (Latifolius Group) 'Rue Ledan'
  • Acanthus mollis 'Hollard's Gold'
  • Acanthus mollis 'Tasmanian Angel' (v)
  • Acanthus sennii
  • Acanthus spinosus Ferguson's form
  • Acanthus spinosus L.
  • Acanthus spinosus Spinosissimus Group
  • Acanthus 'Summer Beauty'
  • Acanthus 'Whitewater' (v)
  • Acer palmatum 'Seiryu' (D)
  • Achillea filipendulina 'Gold Plate'
  • Achillea millefolium 'Pomegranate' (Tutti Frutti Series)
  • Achillea millefolium 'Red Velvet'
  • Achillea millefolium 'Rose Madder'
  • Achillea ptarmica (The Pearl Group) 'The Pearl' (clonal) (d)
  • Achillea ptarmica 'Perry's White' (d)
  • Achillea 'Coronation Gold'
  • Achillea 'Lucky Break'
  • Achillea 'Martina'
  • Achillea 'Moonshine'
  • Achillea 'Moonwalker'
  • Achillea 'Prospero'
  • Achillea 'Schwellenburg'
  • Achillea 'Taygetea'
  • Acis nicaeensis
  • Acis trichophylla f. purpurascens
  • Acis valentina
  • Aconitum anthora
  • Aconitum carmichaelii
  • Aconitum carmichaelii (Arendsii Group) 'Arendsii'
  • Aconitum carmichaelii (Arendsii Group) 'Cloudy' (PBR)
  • Aconitum carmichaelii (Wilsonii Group) 'Barker's Variety'
  • Aconitum carmichaelii (Wilsonii Group) 'Kelmscott'
  • Aconitum carmichaelii (Wilsonii Group) 'Spätlese'
  • Aconitum carmichaelii 'River Finn'
  • Aconitum carmichaelii 'River Lugg'
  • Aconitum carmichaelii 'River Medway'
  • Aconitum carmichaelii 'River Nene'
  • Aconitum carmichaelii 'River Ouse'
  • Aconitum carmichaelii 'River Spey'
  • Aconitum carmichaelii 'River Teifi'
  • Aconitum carmichaelii 'River Trent'
  • Aconitum carmichaelii 'River Welland'
  • Aconitum carmichaelii 'Royal Flush' (PBR)
  • Aconitum carmichaelii var. truppelianum
  • Aconitum fischeri Rchb.
  • Aconitum japonicum
  • Aconitum loczyanum
  • Aconitum lycoctonum 'Darkeyes'
  • Aconitum lycoctonum subsp. moldavicum
  • Aconitum nagarum
  • Aconitum napellus
  • Aconitum napellus subsp. napellus (Anglicum Group) 'Spring Yellow'
  • Aconitum napellus subsp. napellus Anglicum Group
  • Aconitum nasutum
  • Aconitum nasutum white-flowered
  • Aconitum proliferum
  • Aconitum sachalinense
  • Aconitum sachalinense subsp. yezoense
  • Aconitum variegatum subsp. paniculatum
  • Aconitum × cammarum 'Bicolor'
  • Aconitum 'Stainless Steel'
  • Aconitum 'Surprise'
  • Actaea japonica compact
  • Actaea pachypoda Misty Blue = 'Lk05' (PBR)
  • Actaea rubra f. neglecta
  • Actaea simplex
  • Actaea simplex (Atropurpurea Group) 'Black Negligee'
  • Actaea simplex (Atropurpurea Group) 'Brunette'
  • Actaea simplex (Atropurpurea Group) 'James Compton'
  • Actaea simplex 'Pink Spike'
  • Actaea simplex variegated (v)
  • Adenophora bulleyana
  • Adenophora nikoensis
  • Adenophora pereskiifolia
  • Adenophora
  • Adenophora 'Gaudi Violet'
  • Adiantum aleuticum 'Subpumilum'
  • Adiantum aleuticum 'Tasselatum'
  • Adiantum pedatum L.
  • Adiantum reniforme
  • Adiantum venustum
  • Aegopodium podagraria 'Variegatum' (v)
  • Aeonium balsamiferum
  • Aeonium ciliatum
  • Aeonium decorum 'Variegatum' (v)
  • Aeonium goochiae 'Ballerina' (v)
  • Aeonium haworthii 'Kiwi'
  • Aeonium rubrolineatum
  • Aeonium simsii × 'Zwartkop'
  • Aeonium spathulatum
  • Aeonium tabuliforme
  • Aeonium 'Blushing Beauty'
  • Aeonium 'Bronze Medal'
  • Aeonium 'Cristata Sunburst'
  • Aeonium 'Cyclops'
  • Aeonium 'Logan Rock'
  • Aeonium 'Phoenix Flame'
  • Aeonium 'Sunburst' (v)
  • Aeonium 'Torchbearer'
  • Aeonium 'Trewidden'
  • Aeonium 'Voodoo'
  • Aeonium 'Zwartkop'
  • Aesculus × neglecta 'Erythroblastos'
  • Agapanthus coddii
  • Agapanthus Silver Moon = 'Notfred' (PBR) (v)
  • Agapanthus 'Ardernei Hybrid'
  • Agapanthus 'B in B' (PBR)
  • Agapanthus 'Black Pantha' (PBR)
  • Agapanthus 'Blue Moon'
  • Agapanthus 'Buckingham Palace'
  • Agapanthus 'Ed Carman' (v)
  • Agapanthus 'Enigma'
  • Agapanthus 'Flore Pleno' (d)
  • Agapanthus 'Gold Strike' (PBR) (v)
  • Agapanthus Headbourne hybrids
  • Agapanthus 'Jack's Blue'
  • Agapanthus 'Little Dutch Blue'
  • Agapanthus 'Little Dutch White' (PBR)
  • Agapanthus 'Loch Hope'
  • Agapanthus 'May Snow' (v)
  • Agapanthus 'Meibont' (v)
  • Agapanthus 'Midnight Star'
  • Agapanthus 'Misty Dawn' (v)
  • Agapanthus 'Phantom'
  • Agapanthus 'Purple Cloud'
  • Agapanthus 'Rob Cole'
  • Agapanthus 'Royal Blue'
  • Agapanthus 'Timaru'
  • Agapanthus 'Top Slice' (v)
  • Agapanthus 'White Heaven' (PBR)
  • Agapanthus 'Windlebrooke'
  • Agapanthus 'Windsor Grey'
  • Agapanthus 'Zigzag White'
  • Agastache mexicana 'Red Fortune' (PBR)
  • Agastache Orange Nectar (Nectar Series)
  • Agastache 'Kudos Ambrosia' (PBR) (Kudos Series)
  • Agastache 'Linda'
  • Agastache 'Summer Glow'
  • Agave americana
  • Agave americana 'Marginata' (v)
  • Agave americana 'Mediopicta Alba' (v)
  • Agave americana 'Mediopicta Aurea' (v)
  • Agave americana 'Striata' (v)
  • Agave angustifolia var. marginata hort.
  • Agave atrovirens
  • Agave boldinghiana
  • Agave bovicornuta
  • Agave bracteosa
  • Agave chrysantha
  • Agave chrysantha 'Black Canyon'
  • Agave colorata
  • Agave deserti
  • Agave deserti var. simplex
  • Agave filifera
  • Agave gentryi
  • Agave guttata
  • Agave impressa
  • Agave kerchovei
  • Agave lechuguilla
  • Agave maculosa
  • Agave mckelveyana
  • Agave mckelveyana from Bagdad, Arizona
  • Agave mitis var. mitis × variegata
  • Agave obscura
  • Agave ortgiesiana
  • Agave ovatifolia
  • Agave palmeri
  • Agave parrasana
  • Agave parryi
  • Agave parryi 'Cream Spike' (v)
  • Agave parryi 'Ohi-kissho-ten-nishiki' (v)
  • Agave parryi subsp. neomexicana
  • Agave parryi subsp. neomexicana from W of Artesia, New Mexico
  • Agave parryi subsp. parryi
  • Agave parryi var. huachucensis
  • Agave parryi var. truncata variegated (v)
  • Agave parviflora
  • Agave potatorum
  • Agave potatorum 'Gary Fisher'
  • Agave scabra
  • Agave schidigera
  • Agave schidigera 'Shira-ito-no-ohi' (v)
  • Agave schottii
  • Agave sileri
  • Agave stictata
  • Agave striata 'Rubra'
  • Agave striata subsp. falcata
  • Agave stricta
  • Agave stricta 'Rubra'
  • Agave titanota
  • Agave toumeyana
  • Agave undulata
  • Agave undulata 'Chocolate Chips'
  • Agave univittata
  • Agave univittata 'Quadricolor' (v)
  • Agave utahensis
  • Agave utahensis from Peach Springs, Arizona
  • Agave utahensis subsp. kaibabensis
  • Agave utahensis var. eborispina
  • Agave variegata
  • Agave victoriae-reginae
  • Agave victoriae-reginae dwarf
  • Agave virginica
  • Agave vivipara var. vivipara
  • Agave wocomahi
  • Agave xylonacantha
  • Agave 'Bloodspot'
  • Agave 'Cornelius'
  • Agave 'Macha Mocha'
  • Agave 'Sharkskin Shoes'
  • Ageratina altissima 'Chocolate'
  • Agrimonia eupatoria 'Cambridge Lace' (v)
  • Agrostis nebulosa
  • Agrostis stolonifera 'Julia Ann' (v)
  • Aichryson × aizoides var. domesticum 'Variegatum' (v)
  • Ajuga incisa 'Bikun' (v)
  • Ajuga reptans 'Catlin's Giant'
  • Ajuga 'Pink Lightning' (v)
  • Akebia longeracemosa
  • Akebia quinata
  • Albuca spiralis
  • Allium altissimum 'Goliath'
  • Allium amethystinum 'Red Mohican' (PBR)
  • Allium ampeloprasum 'Elephant'
  • Allium ampeloprasum 'Purple Mystery'
  • Allium angulosum
  • Allium aschersonianum
  • Allium atropurpureum
  • Allium atroviolaceum
  • Allium caesium
  • Allium caesium 'Pskem's Beauty'
  • Allium callimischon subsp. haemostictum
  • Allium cepa 'Kew White'
  • Allium cristophii
  • Allium curtum
  • Allium cyaneum
  • Allium cyathophorum var. farreri
  • Allium darwasicum
  • Allium ericetorum
  • Allium falcifolium
  • Allium fistulosum
  • Allium flavum subsp. tauricum
  • Allium forrestii
  • Allium haemanthoides
  • Allium hollandicum 'Purple Surprise'
  • Allium hookeri
  • Allium hyalinum pink-flowered
  • Allium lenkoranicum
  • Allium litvinovii
  • Allium meteoricum
  • Allium neapolitanum Cowanii Group
  • Allium nigrum
  • Allium obliquum
  • Allium ochotense
  • Allium oreophilum 'Samur'
  • Allium paniculatum
  • Allium paradoxum var. normale
  • Allium platycaule
  • Allium prattii
  • Allium pskemense
  • Allium rosenbachianum 'Album'
  • Allium saxatile
  • Allium schubertii
  • Allium scorzonerifolium
  • Allium senescens subsp. glaucum
  • Allium siculum subsp. dioscoridis
  • Allium sikkimense
  • Allium sphaerocephalon
  • Allium sphaerocephalon subsp. arvense
  • Allium stamineum
  • Allium stipitatum
  • Allium stipitatum 'Violet Beauty'
  • Allium stracheyi
  • Allium thunbergii 'Ozawa'
  • Allium triquetrum
  • Allium tuberosum
  • Allium tuberosum 'White Dwarf'
  • Allium tuncelianum
  • Allium unifolium
  • Allium ursinum 'Golden Fleece'
  • Allium validum
  • Allium wallichii
  • Allium wallichii dark-flowered
  • Allium zaprjagajevii
  • Allium
  • Allium 'Ambassador'
  • Allium 'Caméléon'
  • Allium 'Firmament'
  • Allium 'Forelock'
  • Allium 'Globemaster'
  • Allium 'Judith'
  • Allium 'Judith's Findling'
  • Allium 'Mercurius' (PBR)
  • Allium 'Millennium'
  • Allium 'Pink Jewel'
  • Allium 'Purple Rain'
  • Allium 'Spider'
  • Allium 'Statos'
  • Allium 'Summer Drummer'
  • Alnus glutinosa 'Aurea'
  • Aloe striatula
  • Aloe 'Cleopatra'
  • Alstroemeria brasiliensis
  • Alstroemeria exserens
  • Alstroemeria presliana
  • Alstroemeria pseudospathulata
  • Alstroemeria psittacina 'Royal Star' (v)
  • Alstroemeria Indian Summer = 'Tesronto' (PBR) (Summer Paradise Series)
  • Alstroemeria Rock 'n' Roll = 'Alsdun01' (PBR) (v)
  • Alstroemeria 'Dandy Candy'
  • Alstroemeria 'Freedom'
  • Alstroemeria 'Mauve Majesty'
  • Alstroemeria 'Spitfire' (v)
  • Alstroemeria 'Sweet Laura' (PBR)
  • Althaea armeniaca
  • Althaea cannabina
  • Alyssum montanum subsp. pluscanescens
  • Amaryllis belladonna
  • Amaryllis belladonna 'Johannesburg'
  • Amaryllis belladonna 'Purpurea'
  • Ambrosina bassii
  • Amelanchier alnifolia var. pumila
  • Amicia zygomeris
  • Amicia zygomeris 'John's Big Splash' (v)
  • Ammocharis coranica
  • Amorphophallus albus
  • Amorphophallus henryi
  • Amorphophallus kerrii
  • Amorphophallus konjac
  • Amorphophallus napalensis
  • Amorphophallus ongsakulii
  • Amorphophallus stipitatus
  • Amorphophallus yuloensis
  • Ampelodesmos mauritanicus
  • Ampelopsis aconitifolia 'Chinese Lace'
  • Ampelopsis brevipedunculata 'Elegans' (v)
  • Amsonia orientalis
  • Amsonia tabernaemontana
  • Amsonia 'Blue Ice'
  • Amsonia 'Ernst Pagels'
  • Andryala glandulosa
  • Anemanthele lessoniana
  • Anemanthele lessoniana 'Sirocco'
  • Anemarrhena asphodeloides
  • Anemone blanda blue-flowered
  • Anemone blanda 'Charmer'
  • Anemone blanda 'Ingramii'
  • Anemone blanda 'White Splendour'
  • Anemone canadensis
  • Anemone coronaria (De Caen Group) 'Bicolor'
  • Anemone coronaria (De Caen Group) 'Bordeaux'
  • Anemone filisecta
  • Anemone flaccida
  • Anemone hupehensis var. japonica 'Rotkäppchen'
  • Anemone nemorosa 'Atley'
  • Anemone nemorosa 'Bowles's Purple'
  • Anemone nemorosa 'Bracteata Pleniflora' (d)
  • Anemone nemorosa 'Frenzy'
  • Anemone nemorosa 'Gigantea Rubra'
  • Anemone nemorosa 'Glyncoch Gold'
  • Anemone nemorosa 'Hakumane Senjuizaki'
  • Anemone nemorosa 'Lucia'
  • Anemone nemorosa 'Mart's Blue'
  • Anemone nemorosa 'Robinsoniana'
  • Anemone nemorosa 'Royal Blue'
  • Anemone nemorosa 'Vestal' (d)
  • Anemone nemorosa 'Viridiflora'
  • Anemone nemorosa 'Westwell Pink'
  • Anemone ranunculoides laciniata
  • Anemone ranunculoides 'Crazy Vienna'
  • Anemone ranunculoides 'Frank Waley'
  • Anemone ranunculoides 'Fuchsis Traum'
  • Anemone rupicola
  • Anemone stolonifera double-flowered (d)
  • Anemone tetrasepala
  • Anemone trifolia L.
  • Anemone udensis
  • Anemone × hybrida 'Andrea Atkinson'
  • Anemone × hybrida 'Königin Charlotte'
  • Anemone × hybrida 'Loreley'
  • Anemone × lipsiensis 'Pallida'
  • Anemone × lipsiensis 'Vindobonensis'
  • Anemone Elfin Swan = 'Macane017' (PBR)
  • Anemone Wild Swan = 'Macane001' (PBR)
  • Anemone 'Danish White'
  • Anemonella thalictroides 'Babe'
  • Anemonella thalictroides 'Betty Blake' (d)
  • Anemonella thalictroides 'Blushing Bride' (d)
  • Anemonella thalictroides 'Cameo'
  • Anemonella thalictroides 'Diamante'
  • Anemonella thalictroides 'Double Diamante' (d)
  • Anemonella thalictroides f. rosea 'Oscar Schoaf' (d)
  • Anemonella thalictroides 'Green Hurricane' (d)
  • Anemonella thalictroides 'Tairin'
  • Anemopsis californica
  • Angelica gigas
  • Angelica pachycarpa
  • Angelica sylvestris 'Ebony'
  • Angelica taiwaniana
  • Anisodontea capensis 'Elegans Princess'
  • Anisodontea × hypomadara (Sprague) D.M. Bates
  • Anisodontea 'El Rayo'
  • Anthemis arvensis subsp. sphacelata
  • Anthemis marschalliana
  • Anthemis punctata subsp. cupaniana
  • Anthemis punctata subsp. cupaniana 'Nana'
  • Anthericum ramosum
  • Anthriscus sylvestris 'Going for Gold'
  • Anthriscus sylvestris 'Ravenswing'
  • Antirrhinum braun-blanquetii
  • Apios americana
  • Aquilegia viridiflora
  • Aquilegia vulgaris 'Clementine Blue' (Clementine Series) (d)
  • Aquilegia vulgaris 'Eyecatcher'
  • Aquilegia vulgaris 'Nivea'
  • Aquilegia vulgaris 'Pom Pom Crimson' (Pom Pom Series)
  • Aquilegia vulgaris var. flore-pleno black-flowered (d)
  • Aquilegia vulgaris var. stellata 'Black Barlow' (Barlow Series) (d)
  • Aquilegia vulgaris var. stellata 'Blue Barlow' (Barlow Series) (d)
  • Aquilegia 'Fruit and Nut Chocolate'
  • Arabis alpina subsp. caucasica 'Arctic Joy' (v)
  • Arabis procurrens
  • Arabis procurrens 'Variegata' (v)
  • Arachniodes davalliaeformis
  • Arachniodes simplicior
  • Arachniodes standishii
  • Araiostegia hymenophylloides
  • Araiostegia perdurans
  • Araucaria araucana
  • Ardisia japonica
  • Ardisia japonica var. angusta
  • Argyrocytisus battandieri
  • Arisaema candidissimum
  • Arisaema ciliatum var. liubaense
  • Arisaema consanguineum
  • Arisaema consanguineum 'The Perfect Wave'
  • Arisaema consanguineum variegated (v)
  • Arisaema costatum
  • Arisaema galeatum
  • Arisaema kiushianum
  • Arisaema kiushianum 'Kikkou-fu'
  • Arisaema speciosum
  • Arisarum proboscideum
  • Artemisia abrotanum
  • Artemisia caerulescens subsp. cretacea
  • Artemisia indica var. momiyamae
  • Artemisia ludoviciana 'Valerie Finnis'
  • Artemisia stelleriana from Alaska
  • Arthropodium candidum 'Little Lilia' (v)
  • Arum creticum 'Karpathos'
  • Arum creticum 'Marmaris White'
  • Arum italicum
  • Arum italicum 'Angelique'
  • Arum italicum 'Edward Dougal'
  • Arum italicum 'Indubitable'
  • Arum italicum 'Nancy Lindsay'
  • Arum italicum 'Sandy McNabb'
  • Arum italicum subsp. italicum 'Marmoratum'
  • Arum italicum subsp. italicum 'Spotted Jack'
  • Arum italicum subsp. italicum 'Uniquity'
  • Arum italicum subsp. italicum 'White Winter'
  • Arum italicum subsp. neglectum 'Miss Janay Hall' (v)
  • Arum italicum 'Yarnells'
  • Arum korolkowii
  • Arum maculatum 'Painted Lady' (v)
  • Arum 'Chameleon'
  • Arum 'Monksilver'
  • Aruncus dioicus
  • Aruncus dioicus 'Zweiweltenkind'
  • Aruncus 'Horatio'
  • Aruncus 'Johannifest'
  • Aruncus 'Woldemar Meier'
  • Asarum caudatum
  • Asarum caudatum 'Little Murphy'
  • Asarum delavayi
  • Asarum epigynum
  • Asarum epigynum 'Silver Web'
  • Asarum europaeum
  • Asarum maximum 'Silver Panda'
  • Asarum splendens
  • Asparagus densiflorus
  • Asparagus filicinus var. giraldii
  • Asparagus pseudoscaber 'Spitzenschleier'
  • Asparagus retrofractus
  • Asparagus scandens
  • Asparagus setaceus
  • Asparagus aff. meioclados
  • Asperula aristata subsp. scabra
  • Asphodeline lutea
  • Asphodelus acaulis
  • Asphodelus aestivus
  • Asphodelus ramosus
  • Aspidistra elatior
  • Aspidistra elatior 'Akebono' (v)
  • Aspidistra elatior 'Asahi' (v)
  • Aspidistra elatior 'Hoshi-zora' (v)
  • Aspidistra elatior 'Lennon's Song' (v)
  • Aspidistra elatior 'Okame' (v)
  • Aspidistra fungilliformis 'China Star' (v)
  • Aspidistra hainanensis 'Jade Ribbons'
  • Aspidistra linearifolia 'Leopard' (v)
  • Aspidistra lurida 'Ginga Giant' (v)
  • Aspidistra minutiflora
  • Aspidistra omeiensis
  • Aspidistra sichuanensis 'Ginga' (v)
  • Aspidistra tonkinensis
  • Aspidistra typica 'China Sun'
  • Aspidistra zongbayi
  • Aspidistra zongbayi 'Uan Fat Lady'
  • Aspidistra
  • Asplenium ceterach
  • Asplenium cuneifolium
  • Asplenium daucifolium
  • Asplenium scolopendrium 'Angustatum'
  • Asplenium scolopendrium Undulatum Group
  • Asplenium trichomanes
  • Astelia chathamica
  • Aster ageratoides
  • Aster ageratoides 'Ashvi'
  • Aster ageratoides 'Asran'
  • Aster ageratoides 'Ezo Murasaki'
  • Aster ageratoides 'Harry Smith'
  • Aster ageratoides 'Starshine' (PBR)
  • Aster alpinus var. albus
  • Aster amellus 'Butzemann'
  • Aster amellus 'Doktor Otto Petschek'
  • Aster amellus 'Forncett Flourish'
  • Aster amellus 'Framfieldii'
  • Aster amellus 'Gründer'
  • Aster amellus 'King George'
  • Aster amellus 'Lac de Genève'
  • Aster amellus 'Lady Hindlip'
  • Aster amellus 'Moerheim Gem'
  • Aster amellus 'Nocturne'
  • Aster amellus 'Veilchenkönigin'
  • Aster peduncularis
  • Aster pyrenaeus 'Lutetia'
  • Aster scaber
  • Aster spathulifolius
  • Aster thomsonii
  • Aster × frikartii 'Mönch'
  • Aster × frikartii 'Wunder von Stäfa'
  • Aster 'Cotswold Gem'
  • Aster 'Triumph'
  • Astilbe koreana
  • Astilbe rivularis
  • Astilbe 'Chocolate Shogun'
  • Astragalus glycyphyllos
  • Astrantia major
  • Astrantia major 'Green Tapestry' (v)
  • Astrantia major 'Star of Billion' (PBR)
  • Astrantia major 'Star of Magic' (PBR) (v)
  • Astrantia major subsp. involucrata 'Canneman'
  • Astrantia major 'Sunningdale Variegated' (v)
  • Astrantia major 'Titoki Point'
  • Astrantia major 'Venice' (PBR)
  • Astrantia 'Hadspen Blood'
  • Astrantia 'Moulin Rouge' (PBR)
  • Astrantia 'Roma' (PBR)
  • Astrantia 'Ruby Star' (PBR)
  • Astrantia 'Superstar' (PBR)
  • Astrolepis sinuata
  • Athyrium filix-femina 'Clarissimum Jones'
  • Athyrium filix-femina Cristatum Group
  • Athyrium filix-femina 'Frizelliae'
  • Athyrium filix-femina 'Minutissimum'
  • Athyrium filix-femina 'Plumosum Axminster'
  • Athyrium filix-femina 'Plumosum Cristatum Drueryi'
  • Athyrium filix-femina 'Plumosum Percristatum'
  • Athyrium filix-femina 'Rotstiel'
  • Athyrium filix-femina subsp. angustum f. rubellum 'Lady in Red'
  • Athyrium minimum
  • Athyrium niponicum var. pictum
  • Athyrium niponicum var. pictum 'Burgundy Lace'
  • Athyrium niponicum var. pictum 'Red Beauty'
  • Athyrium niponicum var. pictum 'Silver Falls'
  • Athyrium niponicum var. pictum 'Ursula's Red'
  • Athyrium otophorum var. okanum
  • Athyrium 'Ghost'
  • Athyrium 'Ocean's Fury'
  • Atriplex halimus
  • Atriplex halimus 'Cascais'
  • Ballota acetabulosa
  • Ballota pseudodictamnus
  • Baptisia australis 'Exaltata'
  • Baptisia 'Cherries Jubilee'
  • Baptisia 'Dutch Chocolate' (Decadence Series)
  • Baptisia 'Lemon Meringue'
  • Baptisia 'Pink Truffles' (Decadence Series)
  • Baptisia 'Vanilla Cream'
  • Beesia calthifolia
  • Begonia foliosa var. miniata
  • Begonia grandis Dryand. subsp. evansiana (Andrews) Irmsch. var. alba hort.
  • Begonia grandis subsp. evansiana
  • Begonia luxurians
  • Begonia panchtharensis
  • Begonia rex (R)
  • Begonia silletensis
  • Begonia silletensis subsp. mengyangensis
  • Begonia sutherlandii (T)
  • Begonia taliensis
  • Begonia 'Benitochiba' (R)
  • Begonia 'Crestabruchii'
  • Begonia 'Garden Angel Blush' (Garden Angel Series)
  • Bellevalia desertorum
  • Bellevalia dubia
  • Bellevalia forniculata
  • Bellevalia hyacinthoides
  • Bellevalia paradoxa
  • Bellevalia romana
  • Bellevalia tabriziana
  • Bellevalia 'Cream Pearl'
  • Bellis perennis 'Big Bob' (d)
  • Bellis perennis 'Miss Mason'
  • Bellis perennis old strain
  • Bellis perennis 'Prolifera' double-flowered (d)
  • Bellis perennis 'The Pearl'
  • Berberis darwinii 'Compacta'
  • Berberis × stenophylla 'Corallina Compacta'
  • Bergenia ciliata 'Wilton'
  • Bergenia cyanea
  • Bergenia emeiensis
  • Bergenia pacumbis
  • Bergenia pacumbis 'Bouncing Babe'
  • Bergenia purpurascens 'Irish Crimson'
  • Bergenia stracheyi
  • Bergenia 'Abendglocken'
  • Bergenia 'Abendglut'
  • Bergenia 'Admiral'
  • Bergenia 'Andrea'
  • Bergenia 'Angel Kiss' (Dragonfly Series)
  • Bergenia 'Baby Doll'
  • Bergenia 'Bach'
  • Bergenia 'Ballawley' clonal
  • Bergenia 'BartÓk'
  • Bergenia 'Beethoven'
  • Bergenia 'Bressingham Ruby'
  • Bergenia 'Bressingham Salmon'
  • Bergenia 'Bressingham White'
  • Bergenia 'Claire Maxine'
  • Bergenia 'Eden's Dark Margin'
  • Bergenia 'Eden's Magic Giant'
  • Bergenia 'Ice Queen'
  • Bergenia 'Little Pine'
  • Bergenia 'Morgenröte'
  • Bergenia 'Overture'
  • Bergenia 'Pink Dragonfly'
  • Bergenia 'Rosi Klose'
  • Bergenia 'Schneekoenigin'
  • Bergenia 'Silberlicht'
  • Bergenia 'Simply Sweet'
  • Bergenia 'Wintermärchen'
  • Bergenia 'XXL'
  • Berkheya purpurea
  • Berkheya radula
  • Beschorneria albiflora
  • Beschorneria calcicola
  • Beschorneria rigida
  • Beschorneria septentrionalis
  • Beschorneria septentrionalis variegated (v)
  • Beschorneria wrightii
  • Beschorneria 'Red Bells'
  • Bessera elegans
  • Betonica macrantha
  • Betonica macrantha 'Morning Blush'
  • Betonica macrantha 'Robusta'
  • Betonica macrantha 'Superba'
  • Betonica macrantha 'Violacea'
  • Betonica nivea
  • Betonica nivea parsley-leaved
  • Betonica officinalis
  • Betonica officinalis 'Rosea Superba'
  • Betonica officinalis 'Wisley White'
  • Biarum carratracense from Spain
  • Biarum davisii
  • Biarum ditschianum from Turkey
  • Biarum marmarisense
  • Biarum tenuifolium
  • Biarum tenuifolium subsp. abbreviatum
  • Biarum tenuifolium subsp. arundanum
  • Biarum tenuifolium subsp. galianii
  • Biarum tenuifolium subsp. zelebori
  • Biarum
  • Bidens aurea 'Mellow Yellow'
  • Billbergia nutans 'Variegata' (v)
  • Bituminaria bituminosa
  • Blechnum brasiliense
  • Blechnum niponicum
  • Blechnum penna-marina
  • Blechnum tabulare (Thunb.) Kuhn
  • Bletilla striata
  • Bletilla striata 'Albostriata'
  • Bletilla striata f. gebina
  • Boehmeria nivea
  • Bomarea acutifolia
  • Bomarea edulis
  • Bomarea multiflora
  • Bomarea patacocensis
  • Bomarea 'Fiesta'
  • Borinda lushuiensis
  • Borinda macclureana
  • Borinda papyrifera
  • Borinda 'Harlequin'
  • Boronia heterophylla
  • Bouvardia ternifolia
  • Brachyglottis bidwillii
  • Brachyglottis rotundifolia
  • Brassica oleracea var. ramosa 'Cotswold Cream' (v)
  • Brassica oleracea var. ramosa 'D'Aubenton Panaché' (v)
  • Brassica oleracea var. ramosa 'Luigi Leopold' (v)
  • Brodiaea californica
  • Bromus erectus
  • Bromus inermis 'Skinner's Gold' (v)
  • Broussonetia papyrifera
  • Brunnera macrophylla
  • Brunnera macrophylla 'Alexanders Great' (PBR)
  • Brunnera macrophylla 'Betty Bowring'
  • Brunnera macrophylla 'Dawson's White' (v)
  • Brunnera macrophylla 'Gordano Gold' (v)
  • Brunnera macrophylla 'Hadspen Cream' (v)
  • Brunnera macrophylla 'Jack Frost' (PBR)
  • Brunnera macrophylla 'Looking Glass' (PBR)
  • Brunnera macrophylla 'Mister Morse' (PBR) (v)
  • Brunnera macrophylla 'Silver Spear'
  • Brunsvigia bosmaniae
  • Brunsvigia elandsmontana
  • Brunsvigia josephinae
  • Brunsvigia marginata
  • Brunsvigia orientalis
  • Brunsvigia pulchra
  • Brunsvigia radulosa
  • Buddleja alternifolia 'Argentea'
  • Buddleja davidii Buzz Ivory = 'Tobudivory' (PBR) (Buzz Series)
  • Buddleja davidii 'Blue Horizon'
  • Buddleja globosa
  • Buddleja macrostachya
  • Buddleja × pikei Unique = 'Pmoore12' (PBR)
  • Buddleja × weyeriana 'Moonlight'
  • Buddleja × weyeriana 'Sungold'
  • Buddleja 'Blue Chip' (PBR) (Lo and Behold Series)
  • Buddleja 'Morning Mist' (PBR)
  • Buddleja 'Pink Delight'
  • Buglossoides purpurocaerulea
  • Bulbine narcissifolia
  • Bulbinella hookeri
  • Bunium ferulaceum
  • Buphthalmum salicifolium
  • Buphthalmum salicifolium 'Dora'
  • Bupleurum falcatum
  • Bupleurum fruticosum
  • Bupleurum rotundifolium
  • Buxus microphylla 'Badsey Kingsville'
  • Buxus microphylla 'Compacta'
  • Buxus sempervirens 'Myosotidifolia'
  • Bystropogon canariensis
  • Calamagrostis brachytricha
  • Calamagrostis × acutiflora 'Eldorado' (v)
  • Calamagrostis × acutiflora 'Karl Foerster'
  • Calamagrostis × acutiflora 'Overdam' (v)
  • Callianthemum anemonoides
  • Caltha palustris 'Honeydew'
  • Camassia cusickii 'Zwanenburg'
  • Camassia leichtlinii 'Sacajawea' (v)
  • Camassia leichtlinii 'Semiplena' (d)
  • Camassia leichtlinii subsp. leichtlinii
  • Camassia leichtlinii subsp. suksdorfii
  • Camassia leichtlinii subsp. suksdorfii 'Electra'
  • Camassia leichtlinii subsp. suksdorfii 'Lady Eve Price'
  • Camassia quamash 'Orion'
  • Camellia sasanqua 'Jean May'
  • Camellia sasanqua 'Maiden's Blush'
  • Camellia sasanqua 'Plantation Pink'
  • Campanula alliariifolia
  • Campanula betulifolia
  • Campanula garganica 'Filigree'
  • Campanula glomerata 'Caroline'
  • Campanula glomerata 'Freya' (PBR)
  • Campanula kemulariae
  • Campanula komarovii
  • Campanula lactiflora 'Alba'
  • Campanula lactiflora 'Assendon Pearl'
  • Campanula lactiflora 'Prichard's Variety'
  • Campanula latiloba
  • Campanula latiloba 'Hidcote Amethyst'
  • Campanula latiloba 'Highcliffe Variety'
  • Campanula makaschvilii × trachelium
  • Campanula ochroleuca
  • Campanula persicifolia
  • Campanula persicifolia 'Azure Beauty'
  • Campanula persicifolia 'Blue Bloomers' (d)
  • Campanula persicifolia 'Chettle Charm'
  • Campanula persicifolia 'Frances' (d)
  • Campanula persicifolia 'Tinpenny Blue'
  • Campanula persicifolia var. alba
  • Campanula portenschlagiana 'Resholdt's Variety'
  • Campanula poscharskyana Blue Waterfall = 'Camgood'
  • Campanula poscharskyana 'Frühlingszauber'
  • Campanula poscharskyana 'Stella'
  • Campanula rhomboidalis L.
  • Campanula trachelium
  • Campanula trachelium 'Bernice' (d)
  • Campanula trachelium f. alba
  • Campanula trachelium 'Purple Break'
  • Campanula
  • Campanula 'Albert Kirkham'
  • Campanula 'Crystal'
  • Campanula 'Faichem Lilac'
  • Campanula 'Kent Belle'
  • Campanula 'Misty Dawn'
  • Campanula 'Paul Furse'
  • Campanula 'Purple Sensation' (PBR)
  • Campanula 'Sarastro'
  • Campanula 'Senior'
  • Campanula 'Summertime Blues' (PBR)
  • Campanula 'Van-Houttei'
  • Campsis × tagliabuana 'Madame Galen'
  • Canarina canariensis from Los Silos, Tenerife
  • Canna indica Tropicanna Gold = 'Mactro' (PBR)
  • Canna Tropicanna Black = 'Lon01' (PBR)
  • Canna 'Anthony and Cleopatra' (v)
  • Canna 'Phasion' (v)
  • Canna 'Sémaphore'
  • Canna 'Striata' (v)
  • Canna 'Sunset'
  • Canna 'Valentine'
  • Capeochloa cincta
  • Cardamine bipinnata
  • Cardamine californica
  • Cardamine diphylla
  • Cardamine glanduligera
  • Cardamine heptaphylla Guincho form
  • Cardamine kitaibelii
  • Cardamine macrophylla
  • Cardamine quinquefolia
  • Cardamine trifolia
  • Carex alba
  • Carex elata 'Aurea'
  • Carex elata 'Knightshayes'
  • Carex oshimensis
  • Carex oshimensis Everest = 'Fiwhite' (PBR) (v)
  • Carex oshimensis 'Evergold' (v)
  • Carex oshimensis 'Everillo' (PBR) (EverColor Series)
  • Carex oshimensis 'Everoro' (EverColor Series) (v)
  • Carex pendula 'Moonraker' (v)
  • Carex scaposa
  • Carex tenuiculmis
  • Carex trifida 'Rekohu Sunrise' (PBR) (v)
  • Carex 'Ice Dance' (v)
  • Carpinus viminea
  • Caryopteris divaricata 'Electrum'
  • Caryopteris × clandonensis 'Summer Sorbet' (PBR) (v)
  • Cautleya spicata 'Robusta'
  • Cenolophium denudatum
  • Centaurea atropurpurea
  • Centaurea babylonica
  • Centaurea cineraria subsp. cineraria
  • Centaurea dealbata 'Steenbergii'
  • Centaurea declinata
  • Centaurea jacea
  • Centaurea marschalliana
  • Centaurea montana 'Purple Heart'
  • Centaurea phrygia
  • Centaurea thracica
  • Centaurea 'Jordy'
  • Centranthus lecoqii
  • Centranthus ruber 'Albus'
  • Centranthus ruber var. coccineus
  • Cephalaria gigantea
  • Cephalaria tchihatchewii
  • Cephalaria transsylvanica
  • Cercis canadensis Red Force = 'Minrouge3' (PBR)
  • Chaenomeles speciosa Hot Fire = 'Minvesu'
  • Chaenomeles speciosa 'Moerloosei'
  • Chaenomeles × superba 'Cameo' (d)
  • Chaenomeles × superba 'Fire Dance'
  • Chaenomeles × superba 'Knap Hill Scarlet'
  • Chaenomeles × superba 'Tortuosa'
  • Chaerophyllum azoricum
  • Chaerophyllum hirsutum 'Roseum'
  • Chamaenerion angustifolium 'Album'
  • Chamaenerion angustifolium 'Isobel'
  • Chamaenerion angustifolium 'Stahl Rose'
  • Chamaenerion dodonaei
  • Chamaerops humilis var. argentea
  • Charybdis maritima
  • Chasmanthium latifolium
  • Cheilanthes distans
  • Cheilanthes eckloniana
  • Cheilanthes grisea
  • Cheilanthes lindheimeri
  • Cheilanthes myriophylla
  • Cheilanthes wootonii
  • Chelidonium majus var. laciniatum
  • Chimonanthus praecox
  • Chimonanthus praecox 'Grandiflorus'
  • Chimonanthus praecox 'Luteus'
  • Chimonobambusa tumidissinoda
  • Chionochloa conspicua subsp. conspicua
  • Chionochloa rubra
  • Chloranthus fortunei
  • Chloranthus henryi
  • Chloranthus sessilifolius 'Domino'
  • Chlorophytum krookianum
  • Choisya × dewitteana White Dazzler = 'Londaz' (PBR)
  • Chrysanthemum 'Angela Blundell' (19b)
  • Chrysanthemum 'Aunt Millicent' (21d)
  • Chrysanthemum 'Bretforton Road'
  • Chrysanthemum burnt orange-flowered
  • Chrysanthemum 'Capel Manor'
  • Chrysanthemum 'Carmine Blush' (21d)
  • Chrysanthemum 'Chelsea Physic Garden'
  • Chrysanthemum 'Cousin Joan' (21d)
  • Chrysanthemum 'Dulwich Pink' (21d)
  • Chrysanthemum E.H. Wilson s.n.
  • Chrysanthemum 'Early Yellow'
  • Chrysanthemum 'Edmund Brown'
  • Chrysanthemum 'Elaine's Hardy White'
  • Chrysanthemum 'Jolie Rose'
  • Chrysanthemum 'Julia Peterson'
  • Chrysanthemum 'La Damoiselle'
  • Chrysanthemum 'Marion' (25a)
  • Chrysanthemum 'Mr Mappie' (21c)
  • Chrysanthemum 'Mrs Jessie Cooper' (21d)
  • Chrysanthemum 'Nantyderry Sunshine' (28b)
  • Chrysanthemum 'Picasso'
  • Chrysanthemum 'Poesie'
  • Chrysanthemum 'Rhumba'
  • Chrysanthemum 'Rose Madder'
  • Chrysanthemum 'Royal Command' (21a)
  • Chrysanthemum 'Ruby Mound' (21c)
  • Chrysanthemum 'Samba'
  • Chrysanthemum 'Shining Light' (21f)
  • Chrysanthemum 'Venus' (21)
  • Chrysanthemum 'Winning's Red' (21)
  • Chrysosplenium macrophyllum
  • Chusquea culeou
  • Cicerbita plumieri
  • Cicerbita plumieri 'Blott' (v)
  • Circaea lutetiana 'Caveat Emptor' (v)
  • Cirsium rivulare 'Atropurpureum'
  • Cirsium rivulare 'Trevor's Felley Find' (PBR)
  • Cirsium tuberosum
  • Cistus creticus subsp. incanus
  • Cistus × cyprius var. ellipticus 'Elma'
  • Claytonia sibirica f. albiflora
  • Clematis heracleifolia 'Cassandra' (H)
  • Clematis recta 'Velvet Night' (F)
  • Clematis rehderiana
  • Clematis × aromatica
  • Clematis × diversifolia
  • Clematis × diversifolia 'Hendersonii' (I)
  • Clematis Golden Tiara = 'Kugotia' (PBR) (Ta)
  • Clematis Princess Kate = 'Zoprika' (PBR) (T)
  • Clematis 'Fascination' (PBR) (I)
  • Clematis 'Praecox' (H)
  • Clerodendrum trichotomum var. fargesii
  • Clerodendrum trichotomum var. fargesii 'Carnival' (v)
  • Clivia caulescens
  • Clivia caulescens pink-flowered
  • Clivia gardenii
  • Clivia miniata
  • Clivia miniata 'Anshan Variegated' (v)
  • Clivia miniata 'Arturo's Yellow'
  • Clivia miniata Belgian hybrids
  • Clivia miniata 'Beverley's Delight'
  • Clivia miniata broad-leaved, variegated (v)
  • Clivia miniata 'Dancing Sisters' × 'Terracotta Green Throat'
  • Clivia miniata Daruma Group
  • Clivia miniata green-centred
  • Clivia miniata 'Light of Buddha' (v)
  • Clivia miniata 'Mitsuhashi Multipetal'
  • Clivia miniata pastel shades
  • Clivia miniata 'Pink Perfection'
  • Clivia miniata 'Striata' (v)
  • Clivia miniata 'Terracotta Treasure' (v)
  • Clivia miniata var. citrina variegated (v)
  • Clivia miniata 'Vico Shima'
  • Clivia miniata 'Wide Leaf Monk'
  • Clivia nobilis
  • Clivia robusta
  • Clivia 'San Marcos Yellow' × 'Solomone Yellow'
  • Clivia 'Sweet Undress'
  • Cobaea pringlei
  • Colchicum macrophyllum
  • Colchicum soboliferum
  • Colchicum × agrippinum
  • Colchicum × byzantinum 'Innocence'
  • Colchicum 'Lilac Wonder'
  • Colchicum 'Waterlily' (d)
  • Coleonema pulchellum 'Pink Fountain'
  • Colletia hystrix
  • Collomia grandiflora
  • Colysis elliptica
  • Commelina robusta
  • Coniogramme emeiensis
  • Coniogramme japonica
  • Coniogramme japonica 'Flavomaculata'
  • Convallaria keiskei 'Marginata' (v)
  • Convallaria majalis 'Albostriata' (v)
  • Convallaria majalis 'Bordeaux'
  • Convallaria majalis 'Fernwood's Golden Slippers'
  • Convallaria majalis 'Géant de Fortin'
  • Convallaria majalis 'Golden Jubilee'
  • Convallaria majalis 'Green Tapestry' (v)
  • Convallaria majalis 'Hardwick Hall' (v)
  • Convallaria majalis 'Hofheim' (v)
  • Convallaria majalis 'Prolificans'
  • Convallaria majalis 'Silberconfolis' (v)
  • Convolvulus althaeoides subsp. tenuissimus
  • Cordyline 'Cha Cha' (PBR) (v)
  • Coreopsis auriculata 'Zamphir'
  • Cornus controversa 'Variegata' (v)
  • Cornus mas 'Aurea' (v)
  • Cornus mas 'Aureoelegantissima' (v)
  • Cornus sanguinea 'Anny's Winter Orange'
  • Cornus sanguinea 'Magic Flame'
  • Cornus sanguinea 'Midwinter Fire'
  • Cornus sericea 'Flaviramea'
  • Cornus 'Eddie's White Wonder'
  • Cornus 'Norman Hadden'
  • Corokia cotoneaster
  • Coronilla valentina 'Cotswold Cream' (v)
  • Coronilla valentina subsp. glauca 'Brockhill Blue'
  • Coronilla valentina subsp. glauca 'Citrina'
  • Coronilla valentina subsp. glauca 'Lauren Stevenson'
  • Coronilla valentina subsp. glauca 'Pygmaea'
  • Coronilla valentina subsp. glauca 'Variegata' (v)
  • Coronilla valentina subsp. glauca 'XXS'
  • Correa reflexa var. nummulariifolia
  • Correa reflexa var. reflexa
  • Cortaderia fulvida (Buchanan) Zotov
  • Cortaderia richardii Brown's strain
  • Cortaderia selloana 'Evita' (PBR)
  • Corydalis angustifolia
  • Corydalis flexuosa 'Nightshade'
  • Corydalis flexuosa 'Purple Leaf'
  • Corydalis lutea
  • Corydalis omeiana
  • Corydalis solida
  • Corydalis solida subsp. solida
  • Corydalis solida subsp. solida 'White Knight'
  • Corydalis solida 'White King'
  • Corydalis temulifolia 'Chocolate Stars'
  • Corylus avellana 'Pendula'
  • Corylus avellana 'Red Majestic' (PBR)
  • Corylus maxima 'Purpurea' (F)
  • Corylus maxima 'Red Filbert' (F)
  • Corynabutilon vitifolium
  • Corynabutilon vitifolium 'Tennant's White'
  • Cotyledon orbiculata
  • Cotyledon orbiculata var. oblonga
  • Crambe cordifolia
  • Crambe cordifolia variegated (v)
  • Crambe maritima
  • Crassula coccinea
  • Crassula ovata 'Undulata'
  • Crassula ovata 'Variegata' (v)
  • Crassula perfoliata var. falcata
  • Crassula perforata 'Variegata' (v)
  • Crataegus ellwangeriana
  • Crataegus monogyna 'Compacta'
  • Cremastra variabilis
  • Crinum × moorei hybrid
  • Crinum × powellii
  • Crinum × powellii 'Album'
  • Crinum 'Carolina Beauty'
  • Crinum 'Elizabeth Traub'
  • Crinum 'Ellen Bosanquet'
  • Crinum 'Emma Jones'
  • Crinum 'Ollene'
  • Crinum 'Sangria'
  • Crinum 'Summer Nocturne'
  • Crinum 'White Queen'
  • Crocosmia masoniorum
  • Crocosmia paniculata 'Cally Greyleaf'
  • Crocosmia × crocosmiiflora 'Coleton Fishacre'
  • Crocosmia × crocosmiiflora 'Emily McKenzie'
  • Crocosmia × crocosmiiflora 'Honey Angels'
  • Crocosmia × crocosmiiflora 'Saracen'
  • Crocosmia × crocosmiiflora 'Twilight Fairy Gold'
  • Crocosmia × crocosmiiflora 'Zeal Tan'
  • Crocosmia × crocosmioides 'Castle Ward Late'
  • Crocosmia 'Anna Marie'
  • Crocosmia 'Firebird'
  • Crocosmia 'Golden Dew'
  • Crocosmia 'Hellfire'
  • Crocosmia 'Lana de Savary'
  • Crocosmia 'Limpopo'
  • Crocosmia 'Lucifer'
  • Crocosmia 'Okavango'
  • Crocosmia 'Orange River'
  • Crocosmia 'Paul's Best Yellow'
  • Crocosmia 'Phillipa Browne'
  • Crocosmia 'Tanllyd'
  • Crocosmia 'Zambesi'
  • Crocus biflorus 'Blue Pearl'
  • Crocus goulimyi
  • Crocus pulchellus
  • Crocus serotinus subsp. salzmannii 'Atropurpureus'
  • Crocus tommasinianus 'Roseus'
  • Crocus tommasinianus 'Whitewell Purple'
  • Crocus 'Vanguard'
  • Crocus 'Yalta'
  • Crossyne flava
  • Crusea coccinea
  • Curio talinoides 'Himalayan Blue'
  • Curio talinoides subsp. mandraliscae 'Blue Finger'
  • Cyanotis beddomei 'Coeruleus'
  • Cyclamen coum
  • Cyclamen coum subsp. coum f. coum Pewter Group
  • Cyclamen hederifolium
  • Cyclamen hederifolium 'Amazeme' (Amazeme Series)
  • Cyclamen hederifolium island scented strain
  • Cyclamen hederifolium var. hederifolium f. albiflorum 'Discovery'
  • Cyclamen persicum
  • Cyclamen pseudibericum
  • Cymbalaria muralis 'Kenilworth White'
  • Cymbalaria muralis 'Snow Wave'
  • Cynara cardunculus
  • Cynara cardunculus (Scolymus Group) 'Gros Camus de Bretagne'
  • Cynara cardunculus (Scolymus Group) 'Gros Vert de LÂon'
  • Cynara cardunculus (Scolymus Group) 'Monica Lynden-Bell'
  • Cynara gomerensis
  • Cynoglossum nervosum
  • Cyperus haspan L.
  • Cypripedium reginae
  • Cyrtanthus breviflorus
  • Cyrtanthus elatus
  • Cyrtanthus elatus × montanus
  • Cyrtanthus epiphyticus
  • Cyrtanthus falcatus
  • Cyrtanthus montanus
  • Cyrtanthus sanguineus
  • Cyrtomium falcatum
  • Cyrtomium fortunei var. clivicola
  • Cystopteris bulbifera
  • Cystopteris moupinensis
  • Dahlia 'Arabian Night' (D)
  • Dahlia 'Balham' (Sin)
  • Dahlia 'Beth's Chaplet' (Sin)
  • Dahlia 'Bishop of Auckland' (PBR) (Misc)
  • Dahlia 'Bishop of Llandaff' (P)
  • Dahlia 'Clair de Lune' (Col)
  • Dahlia 'David Howard' (D)
  • Dahlia 'Edmund' (Sin)
  • Dahlia 'Engelhardts Matador' (D)
  • Dahlia 'Fusion' (D)
  • Dahlia 'Grenadier' (D)
  • Dahlia 'Honka' (SinO)
  • Dahlia 'Honka Surprise' (SinO)
  • Dahlia 'Honor Francis' (Misc)
  • Dahlia 'Karma Choc' (PBR) (D)
  • Dahlia 'Moonfire' (Sin)
  • Dahlia 'Murdoch' ambig. (D)
  • Dahlia 'Nonette' (WL)
  • Dahlia 'Pooh - Swan Island' (Col)
  • Dahlia 'Roxy' (Sin/DwB)
  • Dahlia 'Tally Ho' (Sin)
  • Dahlia 'Twyning's After Eight' (Sin)
  • Dahlia 'Uniquity' (Sin)
  • Danae racemosa
  • Daphne bholua 'Jacqueline Postill'
  • Daphne laureola subsp. philippi
  • Daphne mezereum
  • Daphne odora 'Aureomarginata' (v)
  • Daphne 'Valerie Hillier'
  • Decaisnea fargesii
  • Delphinium maackianum
  • Delphinium (Belladonna Group) 'Atlantis'
  • Delphinium (Belladonna Group) 'Völkerfrieden'
  • Delphinium 'Blueberry Pie' (Highlander Series) (d)
  • Delphinium 'Bolero'
  • Delphinium 'Cha Cha'
  • Delphinium 'Crystal Delight' (Highlander Series) (d)
  • Delphinium 'Flamenco'
  • Delphinium 'Moon Light' (PBR) (Highlander Series) (d)
  • Delphinium 'Morning Sunrise' (PBR) (Highlander Series) (d)
  • Delphinium 'Secret' (PBR)
  • Delphinium 'Summerfield Oberon'
  • Delphinium 'Sweet Sensation' (PBR) (Highlander Series) (d)
  • Deparia japonica
  • Dermatobotrys saundersii
  • Deschampsia cespitosa
  • Deuterocohnia brevifolia
  • Deuterocohnia lotteae
  • Deuterocohnia
  • Dianthus barbatus 'Heart Attack' (p,a)
  • Dianthus barbatus 'Monksilver Black' (p,a)
  • Dianthus carthusianorum
  • Dianthus cintranus subsp. cintranus
  • Dianthus cruentus
  • Dianthus giganteus
  • Dianthus rupicola
  • Dianthus serotinus
  • Dianthus strictus
  • Dianthus (Allwoodii Group) Cherry Daiquiri = 'Wp15 Pie42' (PBR) (Cocktails Series) (p)
  • Dianthus Memories = 'WP11 Gwe04' (PBR) (Scent First Series) (p)
  • Dianthus Mojito = 'Wp15 Pie41' (PBR) (p)
  • Dianthus Passion = 'Wp Passion' (PBR) (Scent First Series) (p)
  • Dianthus 'Dedham Beauty' (p)
  • Dianthus 'Eleanor's Old Irish' (p)
  • Dianthus 'Fettes Mount' (p)
  • Dianthus 'Old Red Clove' (p)
  • Diascia personata
  • Diascia personata 'Coral Spires'
  • Dicentra 'King of Hearts'
  • Dichroa from Guizhou, China
  • Dierama igneum
  • Dierama insigne
  • Dierama jucundum
  • Dierama pauciflorum
  • Dierama pendulum
  • Dierama robustum
  • Dierama 'Lancelot'
  • Diervilla sessilifolia
  • Dietes grandiflora
  • Dietes robinsoniana
  • Digitalis laevigata white-flowered
  • Digitalis purpurea f. albiflora
  • Digitalis purpurea 'Sutton's Apricot'
  • Digitalis × mertonensis
  • Digitalis × valinii Illumination Pink = 'Tmdgfp001' (PBR) (Illumination Series)
  • Digitalis × valinii 'Firebird'
  • Digitalis 'Glory of Roundway'
  • Digitalis 'Spice Island'
  • Diospyros kaki (F)
  • Diphylleia cymosa
  • Disporopsis pernyi
  • Disporum cantoniense 'Aureovariegata'
  • Disporum longistylum 'Night Heron'
  • Disporum smilacinum 'Dai-setsurei' (v)
  • Disporum smilacinum pink-flowered
  • Dittrichia viscosa
  • Doellingeria umbellata
  • Doodia media
  • Dracocephalum grandiflorum
  • Dracunculus canariensis
  • Dracunculus vulgaris
  • Dracunculus vulgaris white-flowered
  • Drynaria baronii
  • Dryopteris affinis
  • Dryopteris affinis (Polydactyla Group) 'Polydactyla Dadds'
  • Dryopteris affinis 'Cristata'
  • Dryopteris affinis 'Pinderi'
  • Dryopteris crassirhizoma
  • Dryopteris cycadina
  • Dryopteris erythrosora 'Brilliance'
  • Dryopteris erythrosora var. koidzumiana
  • Dryopteris erythrosora var. prolifica
  • Dryopteris kuratae
  • Dryopteris lepidopoda
  • Dryopteris namegatae
  • Dryopteris oreades
  • Dryopteris sieboldii
  • Dryopteris wallichiana
  • Dyckia brevifolia
  • Dyckia frigida
  • Dyckia goehringii
  • Dyckia jonesiana
  • Dyckia leptostachya
  • Dyckia 'Burgundy Ice'
  • Dyckia 'Cherry Coke'
  • Dyckia 'Morris Hobbs'
  • Ecballium elaterium
  • Echeveria affinis
  • Echeveria agavoides 'Ebony'
  • Echeveria agavoides 'Lipstick'
  • Echeveria desmetiana
  • Echeveria nodulosa
  • Echeveria rosea
  • Echeveria runyonii 'Topsy Turvy'
  • Echeveria secunda f. secunda 'Compton Carousel'
  • Echeveria shaviana
  • Echeveria × gilva 'Red'
  • Echeveria 'Black Prince'
  • Echeveria 'Blue Waves'
  • Echeveria 'Corymbosa'
  • Echeveria 'Curly Locks'
  • Echeveria 'Mahogany'
  • Echeveria 'Mauna Loa'
  • Echinacea purpurea Elton Knight = 'Elbrook' (PBR)
  • Echinacea purpurea 'Alba'
  • Echinacea purpurea 'Augustkönigin'
  • Echinacea purpurea 'Fatal Attraction' (PBR)
  • Echinacea purpurea 'Green Jewel' (PBR)
  • Echinacea purpurea 'Razzmatazz' (PBR) (d)
  • Echinacea purpurea 'Rubinstern'
  • Echinacea purpurea 'Ruby Giant'
  • Echinacea purpurea 'Summer Salsa' (PBR)
  • Echinacea Delicious Candy = 'Noortdeli' (PBR) (d)
  • Echinacea 'Cleopatra' (PBR) (Butterfly Series)
  • Echinacea 'Funky Yellow'
  • Echinacea 'Meditation' (PBR)
  • Echinacea 'Tiki Torch' (PBR)
  • Echinacea 'Tomato Soup' (PBR)
  • Echinops maracandicus
  • Echinops ritro subsp. ruthenicus
  • Echium vulgare from Armenia
  • Elymus hispidus
  • Elymus magellanicus
  • Ephedra equisetina
  • Ephedra gerardiana
  • Ephedra monosperma
  • Epimedium ecalcaratum
  • Epimedium epsteinii
  • Epimedium fargesii 'Pink Constellation'
  • Epimedium franchetii 'Brimstone Butterfly'
  • Epimedium grandiflorum 'Jennie Maillard'
  • Epimedium grandiflorum 'White Queen'
  • Epimedium ilicifolium
  • Epimedium latisepalum
  • Epimedium leptorrhizum
  • Epimedium pinnatum subsp. colchicum
  • Epimedium pinnatum subsp. colchicum 'Thunderbolt'
  • Epimedium platypetalum
  • Epimedium rhizomatosum
  • Epimedium sempervirens 'Candy Hearts'
  • Epimedium sempervirens 'Creamsickle' (v)
  • Epimedium wushanense 'Caramel'
  • Epimedium wushanense 'Sandy Claws'
  • Epimedium wushanense spiny-leaved
  • Epimedium zhushanense
  • Epimedium × versicolor 'Discolor'
  • Epimedium × versicolor 'Sulphureum'
  • Epimedium 'Akebono'
  • Epimedium 'Amanogawa'
  • Epimedium 'Amber Queen' (PBR)
  • Epimedium 'Beni-kujaku'
  • Epimedium 'Buckland Spider'
  • Epimedium 'Jean O'Neill'
  • Epimedium 'Perrine's Pink' (Magique Elfes Series)
  • Epimedium 'Phoenix'
  • Epimedium 'Pink Champagne'
  • Epimedium 'Red Maximum'
  • Epimedium 'Spine Tingler'
  • Epimedium 'Spinners'
  • Epimedium 'Tama-no-genpei'
  • Epimedium 'The Giant'
  • Epimedium 'Togen'
  • Epimedium 'Valor'
  • Epimedium 'William Stearn'
  • Equisetum hyemale
  • Eragrostis spectabilis
  • Eranthis hyemalis
  • Eranthis hyemalis Cilicica Group
  • Eranthis hyemalis 'Flore Pleno' (d)
  • Eranthis hyemalis 'Grünling'
  • Eranthis hyemalis 'Schwefelglanz'
  • Eremurus robustus
  • Eremurus stenophyllus
  • Eremurus × isabellinus 'Cleopatra'
  • Erigeron karvinskianus
  • Erigeron karvinskianus 'Lavender Lady'
  • Erigeron 'Dominator'
  • Erigeron 'Mrs F.H. Beale'
  • Erigeron 'Schwarzes Meer'
  • Erigeron 'Synehurst'
  • Erigeron 'White Quakeress'
  • Eriolarynx australis
  • Erodium manescavii
  • Erodium × kolbianum
  • Erodium 'Almodovar'
  • Erodium 'Gini's Choice'
  • Erodium 'Las Meninas'
  • Erodium 'Spanish Eyes'
  • Eryngium agavifolium
  • Eryngium bourgatii Graham Stuart Thomas's selection
  • Eryngium giganteum 'Silver Ghost'
  • Eryngium horridum Malme
  • Eryngium pandanifolium 'Physic Purple'
  • Eryngium planum 'Jade Frost' (PBR) (v)
  • Eryngium × oliverianum
  • Eryngium × zabelii 'Jos Eijking'
  • Eryngium 'Pen Blue'
  • Erysimum bonanianum
  • Erysimum cheiri 'Bloody Warrior' (d)
  • Erysimum Sunburst = 'Listrace' (v)
  • Erysimum 'Bowles's Mauve'
  • Erysimum 'Bowles's Yellow'
  • Erysimum 'Red Jep'
  • Erythrostemon gilliesii
  • Eucalyptus gunnii France Bleu = 'Rengun' (PBR)
  • Eucalyptus pauciflora subsp. niphophila
  • Eucomis autumnalis (Mill.) Chitt.
  • Eucomis autumnalis subsp. amaryllidifolia
  • Eucomis comosa
  • Eucomis comosa 'Oakhurst'
  • Eucomis comosa 'Sparkling Burgundy'
  • Eucomis montana
  • Eucomis regia
  • Eucomis zambesiaca
  • Eucomis 'Zeal Bronze'
  • Euonymus alatus 'Compactus'
  • Euonymus bungeanus 'Fireflame'
  • Euonymus carnosus 'Red Wine'
  • Euonymus europaeus 'Red Cascade'
  • Euonymus fortunei Blondy = 'Interbolwi' (v)
  • Euonymus fortunei 'Wolong Ghost'
  • Euonymus grandiflorus Wall.
  • Euonymus hamiltonianus 'Snow' (v)
  • Euonymus japonicus Exstase = 'Goldbolwi' (PBR) (v)
  • Euonymus japonicus 'Bravo' (v)
  • Euonymus japonicus 'Green Rocket'
  • Euonymus japonicus 'White Spire' (PBR) (v)
  • Euonymus vagans Wall.
  • Euonymus 'Rokojo Variegated' (v)
  • Eupatorium cannabinum f. cannabinum 'Flore Pleno' (d)
  • Eupatorium fistulosum f. albidum 'Bartered Bride'
  • Eupatorium fistulosum f. albidum 'Ivory Towers'
  • Eupatorium fortunei 'Capri' (v)
  • Eupatorium maculatum (Atropurpureum Group) 'Riesenschirm'
  • Eupatorium yakushimaense
  • Euphorbia amygdaloides 'Frosted Flame' (PBR)
  • Euphorbia amygdaloides var. robbiae
  • Euphorbia ceratocarpa
  • Euphorbia characias
  • Euphorbia characias 'Blue Wonder'
  • Euphorbia characias 'BQ'
  • Euphorbia characias 'Eye-catcher'
  • Euphorbia characias 'Glacier Blue' (PBR) (v)
  • Euphorbia characias 'Kestrel' (v)
  • Euphorbia characias 'Portuguese Velvet'
  • Euphorbia characias subsp. characias 'Joshua'
  • Euphorbia characias subsp. wulfenii
  • Euphorbia characias subsp. wulfenii 'Emmer Green' (v)
  • Euphorbia characias subsp. wulfenii 'Jimmy Platt'
  • Euphorbia characias subsp. wulfenii 'Silver Shadow' (v)
  • Euphorbia characias 'Tasmanian Tiger' (PBR) (v)
  • Euphorbia clavarioides var. truncata
  • Euphorbia cyparissias clone 2
  • Euphorbia cyparissias 'Fens Ruby'
  • Euphorbia dulcis 'Chameleon'
  • Euphorbia epithymoides 'Bonfire' (PBR)
  • Euphorbia epithymoides 'First Blush' (v)
  • Euphorbia griffithii 'Dixter'
  • Euphorbia griffithii 'Fern Cottage'
  • Euphorbia griffithii 'Wickstead'
  • Euphorbia hypericifolia Diamond Frost = 'Inneuphe' (PBR)
  • Euphorbia jacquemontii
  • Euphorbia margalidiana
  • Euphorbia mellifera
  • Euphorbia myrsinites
  • Euphorbia nicaeensis
  • Euphorbia oblongata
  • Euphorbia palustris
  • Euphorbia palustris 'Woodchippings'
  • Euphorbia resinifera
  • Euphorbia rigida
  • Euphorbia stygiana
  • Euphorbia stygiana 'Torridge'
  • Euphorbia wallichii Hook. f.
  • Euphorbia × martini 'Ascot Rainbow' (PBR) (v)
  • Euphorbia × martini 'Helen Robinson'
  • Euphorbia × pasteurii
  • Euphorbia × pasteurii Brown's strain
  • Euphorbia × pasteurii 'Phrampton Phatty'
  • Euphorbia Redwing = 'Charam' (PBR)
  • Euphorbia 'Abbey Dore'
  • Euphorbia 'Blue Haze'
  • Eurybia divaricata 'Eastern Star'
  • Eurybia radula 'August Sky'
  • Eurybia schreberi
  • Eurybia × herveyi
  • Eustephia coccinea
  • Eustephia darwinii
  • Falcaria vulgaris
  • Farfugium japonicum 'Argenteum' (v)
  • Farfugium japonicum 'Bumpy Ride'
  • Farfugium japonicum 'Kaimon Dake' (v)
  • Farfugium japonicum 'Kinkan' (v)
  • Farfugium japonicum 'Tsuwa-buki'
  • Fatsia japonica 'Moseri'
  • Fatsia japonica 'Tsumugi-shibori' (v)
  • Fatsia japonica 'Variegata' (v)
  • Fatsia polycarpa deeply cut leaf
  • Ferraria crispa
  • Ferraria crispa var. nortieri
  • Ferraria divaricata
  • Ferraria schaeferi
  • Ferraria variablis
  • Ferula communis subsp. glauca
  • Ferula tingitana 'Cedric Morris'
  • Ferulago cassia
  • Ferulago stellata
  • Ficaria fascicularis
  • Ficaria verna 'Brazen Hussy'
  • Ficaria verna 'Coppernob'
  • Ficaria verna Flore Pleno Group (d)
  • Ficaria verna 'Hyde Hall'
  • Ficaria verna 'Old Master'
  • Ficaria verna 'Rita Pirouet'
  • Ficaria verna subsp. chrysocephala
  • Ficaria verna subsp. verna 'Chedglow'
  • Ficinia truncata
  • Ficus carica 'Brunswick' (F)
  • Ficus carica 'Ed's Teacup' (F)
  • Ficus carica 'Ice Crystal' (F)
  • Ficus carica 'Osborn's Prolific' (F)
  • Ficus carica 'Précoce de Dalmatie' (F)
  • Filipendula ulmaria 'Aurea'
  • Filipendula ulmaria 'Flore Pleno' (d)
  • Foeniculum vulgare 'Purpureum'
  • Forsythia viridissima Citrus Swizzle = 'Mckcitrine' (PBR)
  • Forsythia viridissima 'Bronxensis'
  • Forsythia × intermedia 'Susan Gruninger' (v)
  • Forsythia 'Fiesta' (v)
  • Forsythia 'Golden Times' (v)
  • Forsythia 'Paulina'
  • Fritillaria acmopetala
  • Fritillaria amana
  • Fritillaria amana 'Cambridge'
  • Fritillaria camschatcensis
  • Fritillaria imperialis 'Beethoven' (Rascal Series)
  • Fritillaria involucrata
  • Fritillaria meleagris
  • Fritillaria meleagris var. unicolor subvar. alba 'Aphrodite'
  • Fritillaria pontica
  • Fritillaria raddeana
  • Fritillaria sewerzowii
  • Fritillaria thunbergii
  • Fuchsia microphylla subsp. hemsleyana 'Silver Lining' (E)
  • Fuchsia thymifolia (E)
  • Fuchsia 'David'
  • Fuchsia 'Diva'
  • Fuchsia 'Genii'
  • Fuchsia 'Jean Webb' (v)
  • Fuchsia 'Lottie Hobby' (E)
  • Fuchsia 'Mary' (T)
  • Fuchsia 'Overbecks Ruby'
  • Fuchsia 'Sunray' (v)
  • Fuchsia 'Walz Jubelteen'
  • Galanthus elwesii
  • Galanthus elwesii (Hiemalis Group) 'Barnes'
  • Galanthus elwesii (Hiemalis Group) 'Rainbow Farm Early'
  • Galanthus elwesii 'Early Twin'
  • Galanthus elwesii 'Echoes'
  • Galanthus elwesii Hiemalis Group
  • Galanthus elwesii 'Miss Mowcher'
  • Galanthus elwesii 'Mr Omer'
  • Galanthus elwesii 'Mr Peggotty'
  • Galanthus elwesii November-flowering
  • Galanthus gracilis
  • Galanthus nivalis
  • Galanthus nivalis 'Elfin'
  • Galanthus nivalis f. pleniflorus 'Blewbury Tart' (d)
  • Galanthus nivalis f. pleniflorus 'Flore Pleno' (d)
  • Galanthus nivalis f. pleniflorus 'Lady Elphinstone' (d)
  • Galanthus nivalis f. pleniflorus 'Pusey Green Tips' (d)
  • Galanthus nivalis 'Viridapice'
  • Galanthus plicatus
  • Galanthus plicatus 'Augustus'
  • Galanthus plicatus 'Colossus'
  • Galanthus plicatus 'Diggory'
  • Galanthus plicatus 'Warham'
  • Galanthus reginae-olgae subsp. reginae-olgae 'Tilebarn Jamie'
  • Galanthus reginae-olgae subsp. vernalis
  • Galanthus × hybridus 'Merlin'
  • Galanthus 'Armine'
  • Galanthus 'Atkinsii'
  • Galanthus 'Ballerina' (d)
  • Galanthus 'Bertram Anderson'
  • Galanthus 'Bill Bishop'
  • Galanthus 'Brenda Troyle'
  • Galanthus 'Desdemona' (d)
  • Galanthus 'Fly Fishing'
  • Galanthus 'Hippolyta' (d)
  • Galanthus 'Kinn McIntosh'
  • Galanthus 'Lady Beatrix Stanley' (d)
  • Galanthus 'Little Poppet'
  • Galanthus 'Magnet'
  • Galanthus 'S. Arnott'
  • Galanthus 'Straffan'
  • Galanthus 'Wasp'
  • Galatella sedifolia
  • Galatella sedifolia 'Nana'
  • Galatella sedifolia subsp. dracunculoides
  • Galega orientalis
  • Galega × hartlandii 'Alba'
  • Galega × hartlandii 'Lady Wilson'
  • Galega 'His Majesty'
  • Galium odoratum
  • Gardenia jasminoides 'Crown Jewel' (PBR) (d)
  • Gasteria nitida var. nitida variegated (v)
  • Gelsemium rankinii
  • Gelsemium sempervirens
  • Gentiana zekuensis
  • Geranium erianthum 'Axeltree'
  • Geranium ibericum Cav. 'Ushguli Grijs'
  • Geranium libani
  • Geranium linearilobum subsp. transversale 'Foundling's Friend'
  • Geranium linearilobum subsp. transversale 'Laciniatum'
  • Geranium macrorrhizum 'Album'
  • Geranium macrorrhizum 'Czakor'
  • Geranium macrorrhizum 'Ingwersen's Variety'
  • Geranium macrorrhizum 'Variegatum' (v)
  • Geranium macrorrhizum 'White-Ness'
  • Geranium macrostylum
  • Geranium maculatum 'Elizabeth Ann' (PBR)
  • Geranium maculatum 'Espresso'
  • Geranium malviflorum
  • Geranium nodosum
  • Geranium nodosum 'Eton Mess'
  • Geranium nodosum 'Silverwood'
  • Geranium orientalitibeticum
  • Geranium palustre
  • Geranium phaeum 'Anita Alice'
  • Geranium phaeum 'Chocolate Chip'
  • Geranium phaeum 'Golden Samobor'
  • Geranium phaeum 'Joseph Green' (d)
  • Geranium phaeum 'Lavender Pinwheel'
  • Geranium phaeum 'Lily Lovell'
  • Geranium phaeum 'Lisa' (v)
  • Geranium phaeum 'Lustige Witwe' (v)
  • Geranium phaeum 'Margaret Wilson' (v)
  • Geranium phaeum 'Mojito' (v)
  • Geranium phaeum 'Our Pat'
  • Geranium phaeum 'Séricourt'
  • Geranium phaeum 'Taff's Jester' (v)
  • Geranium phaeum 'Wendy's Blush'
  • Geranium pratense
  • Geranium pratense (Victor Reiter Group) 'Kaya'
  • Geranium pratense (Victor Reiter Group) 'Victor Reiter'
  • Geranium pratense 'Black 'n' White'
  • Geranium pratense 'Else Lacey' (d)
  • Geranium pratense 'Marshmallow'
  • Geranium pratense var. pratense f. albiflorum 'Galactic'
  • Geranium pratense var. pratense f. albiflorum 'Plenum Album' (d)
  • Geranium pratense variegated, white-flowered (v)
  • Geranium psilostemon
  • Geranium psilostemon 'Harry'
  • Geranium psilostemon 'Rosefinch'
  • Geranium pyrenaicum 'Bill Wallis'
  • Geranium pyrenaicum f. albiflorum
  • Geranium refractoides
  • Geranium sylvaticum 'Amy Doncaster'
  • Geranium wallichianum Havana Blues = 'Noorthava' (PBR)
  • Geranium wallichianum 'Rise and Shine' (PBR)
  • Geranium × cantabrigiense Crystal Rose = 'Abpp'
  • Geranium × cantabrigiense 'St Ola'
  • Geranium × magnificum
  • Geranium × magnificum 'Blue Blood'
  • Geranium × monacense 'Claudine Dupont'
  • Geranium × oxonianum 'Wageningen'
  • Geranium × riversleaianum 'Russell Prichard'
  • Geranium (Cinereum Group) Jolly Jewel Coral = 'Noortjjcor'
  • Geranium (Cinereum Group) Jolly Jewel Lilac = 'Noortlil' (PBR)
  • Geranium (Cinereum Group) Jolly Jewel Night = 'Noortnight' (PBR)
  • Geranium (Cinereum Group) Jolly Jewel Purple = 'Noortpur' (PBR)
  • Geranium (Cinereum Group) Jolly Jewel Raspberry = 'Noortjjrab'
  • Geranium (Cinereum Group) Jolly Jewel Red = 'Noortimpred'
  • Geranium (Cinereum Group) Jolly Jewel Salmon = 'Noortsal' (PBR)
  • Geranium (Cinereum Group) Jolly Jewel Silver = 'Noortjjsil'
  • Geranium (Cinereum Group) Jolly Jewel Violet = 'Noortvio'
  • Geranium (Cinereum Group) 'Lizabeth' (PBR)
  • Geranium (Cinereum Group) 'Thumbling Hearts'
  • Geranium Blue Sunrise = 'Blogold' (PBR)
  • Geranium Dreamland = 'Bremdream' (PBR)
  • Geranium Patricia = 'Brempat'
  • Geranium Rozanne = 'Gerwat' (PBR)
  • Geranium Sabani Blue = 'Bremigo' (PBR)
  • Geranium Summer Skies = 'Gernic' (PBR) (d)
  • Geranium 'Ann Folkard'
  • Geranium 'Bob's Blunder'
  • Geranium 'Brookside'
  • Geranium 'Coombland White'
  • Geranium 'Dusky Crûg'
  • Geranium 'Eureka Blue'
  • Geranium 'Ivan'
  • Geranium 'Joy'
  • Geranium 'Mavis Simpson'
  • Geranium 'Melinda'
  • Geranium 'Red Admiral'
  • Geranium 'Salome'
  • Geranium 'Sandrine' (PBR)
  • Geranium 'Sanne'
  • Geranium 'Sirak'
  • Geranium 'Solitaire'
  • Geranium 'Tanya Rendall' (PBR)
  • Geranium 'Westacre Halo'
  • Geum coccineum 'Werner Arends'
  • Geum 'Fire Storm' (PBR)
  • Geum 'Flames of Passion' (PBR)
  • Geum 'Herterton Lemon'
  • Geum 'Prinses Juliana'
  • Geum 'Starker's Magnificum'
  • Gillenia trifoliata
  • Gillenia trifoliata 'Pink Profusion'
  • Ginkgo biloba
  • Ginkgo biloba 'Menhir' (PBR)
  • Gladiolus aurantiacus
  • Gladiolus carinatus × orchidiflorus
  • Gladiolus carmineus
  • Gladiolus communis
  • Gladiolus communis subsp. byzantinus
  • Gladiolus cruentus
  • Gladiolus dalenii 'Boone'
  • Gladiolus dalenii subsp. dalenii
  • Gladiolus geardii
  • Gladiolus huttonii × tristis var. concolor
  • Gladiolus tristis var. concolor
  • Gladiolus undulatus
  • Gladiolus woodii
  • Gladiolus × gandavensis hort.
  • Gladiolus 'Adi'
  • Gladiolus 'Amanda Mahy' (N)
  • Gladiolus 'David Hills' (papilio hybrid)
  • Gladiolus 'Emerald Spring' (S)
  • Gladiolus 'Hansnett'
  • Gladiolus 'Monsieur Piquet' (P)
  • Gladiolus 'Natan' (L)
  • Gladiolus 'Peach Blossom' (N)
  • Gladiolus Pilbeam hybrids
  • Gladiolus 'Trevor Edwards'
  • Glandularia 'Abbeville'
  • Globularia bisnagarica
  • Globularia cordifolia
  • Gomphostigma virgatum
  • Goniolimon incanum 'Blue Diamond'
  • Gorgonidium intermedium
  • Grevillea lanigera 'Mount Tamboritha'
  • Grevillea lavandulacea 'Black Range'
  • Grevillea rosmarinifolia 'Jenkinsii'
  • Grevillea victoriae
  • Grevillea 'Murray Valley Queen'
  • Grevillea 'Poorinda Constance'
  • Griselinia littoralis
  • Griselinia scandens
  • Gunnera perpensa
  • Gymnocarpium dryopteris
  • Gynostemma pentaphyllum
  • Habranthus brachyandrus
  • Haemanthus amarylloides
  • Haemanthus barkerae
  • Haemanthus carneus
  • Haemanthus coccineus
  • Haemanthus humilis
  • Haemanthus humilis subsp. hirsutus
  • Haemanthus nortieri
  • Haemanthus pubescens
  • Haemanthus sanguineus
  • Hakonechloa macra 'All Gold'
  • Hakonechloa macra 'Aureola'
  • Haloragis erecta 'Rubra'
  • Hardenbergia violacea
  • Haworthia attenuata 'Super Zebra'
  • Hebe Midnight Sky = 'Lowten' (PBR) (Garden Beauty Series)
  • Hebe Rhubarb and Custard = 'Tull 302' (PBR)
  • Hebe 'Amy'
  • Hebe 'Santa Monica'
  • Hebe 'Simon Délaux'
  • Hebenstretia dura variegated (v)
  • Hechtia
  • Hedera azorica
  • Hedera azorica amber-fruited
  • Hedera azorica 'Saiga'
  • Hedera azorica 'Variegata' (v)
  • Hedera colchica 'Arborescens Variegata' (v)
  • Hedera colchica 'Dentata Variegata' arboreal (v)
  • Hedera helix 'Bettina' (v)
  • Hedera helix 'Curvaceous' (v)
  • Hedera helix 'Duckfoot'
  • Hedera helix 'Dyinnii'
  • Hedera helix 'Elfenbein' (v)
  • Hedera helix f. poetarum
  • Hedera helix 'Golden Gate' (v)
  • Hedera helix 'Ice Cream' (v)
  • Hedera helix 'Jara' arboreal
  • Hedera helix 'Melanie'
  • Hedera helix 'Minikin' (v)
  • Hedera helix 'Perkeo'
  • Hedera helix 'Pink 'n' Curly'
  • Hedera helix 'Pink 'n' Very Curly'
  • Hedera helix 'Raleigh Delight' (v)
  • Hedera helix 'Romanze' (v)
  • Hedera helix 'Silver King' (v)
  • Hedera hibernica 'Spetchley'
  • Hedera pastuchovii 'Ann Ala'
  • Hedera rhombea
  • Hedychium densiflorum
  • Hedychium wardii
  • Hedychium 'Doctor Moy' (v)
  • Helenium 'Double Trouble' (PBR)
  • Helenium 'El Dorado'
  • Helenium 'Goldene Jugend'
  • Helenium 'Goldfuchs'
  • Helenium 'Kupfersprudel'
  • Helenium 'Luc'
  • Helenium 'Meranti'
  • Helenium 'Moerheim Beauty'
  • Helenium 'Oldenburg'
  • Helenium 'Ragamuffin'
  • Helenium 'Red Jewel'
  • Helenium 'Riverton Beauty'
  • Helenium 'Ruby Charm'
  • Helenium 'Sahin's Early Flowerer'
  • Helenium 'Vivace'
  • Helenium 'Zimbelstern'
  • Helianthemum 'Henfield Brilliant'
  • Helianthus salicifolius
  • Helianthus salicifolius very fine-leaved
  • Helianthus strumosus
  • Helianthus 'Carine'
  • Helianthus 'Cotswold Queen'
  • Helianthus 'Dorian Roxburgh'
  • Helianthus 'Happy Days'
  • Helianthus 'Lemon Queen'
  • Helianthus 'Loddon Gold'
  • Helianthus 'Miss Mellish'
  • Helianthus 'Monarch'
  • Helianthus 'Morgensonne'
  • Helianthus 'O Sole Mio'
  • Helichrysum stoechas 'White Barn'
  • Helicodiceros muscivorus
  • Helictotrichon sempervirens 'Saphirsprudel'
  • Heliopsis helianthoides Loraine Sunshine = 'Helhan' (PBR) (v)
  • Heliopsis helianthoides 'Summer Pink' (v)
  • Helleborus foetidus
  • Helleborus niger 'Mont Blanc'
  • Helleborus × ericsmithii 'Pink Beauty' (PBR)
  • Helleborus × ericsmithii 'Winter Moonbeam' (PBR)
  • Helleborus × hybridus
  • Helleborus × hybridus spotted
  • Helleborus × hybridus spotted, double, yellow (d)
  • Helleborus × nigercors 'Emma' (PBR)
  • Helleborus (Rodney Davey Marbled Group) Dana's Dulcet = 'Epb 30'
  • Helleborus (Rodney Davey Marbled Group) Penny's Pink = 'Abcrd01'
  • Helleborus 'Marshmallow'
  • Helleborus 'White Beauty' (PBR)
  • Heloniopsis tubiflora
  • Hemerocallis citrina
  • Hemerocallis citrina × ( × ochroleuca)
  • Hemerocallis dumortieri
  • Hemerocallis fulva var. rosea
  • Hemerocallis fulva 'Variegated Kwanso' (d/v)
  • Hemerocallis fulva yellow-variegated (v)
  • Hemerocallis lilioasphodelus
  • Hemerocallis 'American Revolution'
  • Hemerocallis 'Autumn Red'
  • Hemerocallis 'Bonanza'
  • Hemerocallis 'Burlesque'
  • Hemerocallis 'Burning Daylight'
  • Hemerocallis 'Catherine Woodbery'
  • Hemerocallis 'Cherry Cheeks'
  • Hemerocallis 'Chicago Blackout'
  • Hemerocallis 'Chicago Royal Robe'
  • Hemerocallis 'Chicago Sunrise'
  • Hemerocallis 'Christmas Is'
  • Hemerocallis 'Cindy's Eye'
  • Hemerocallis 'Clothed in Glory'
  • Hemerocallis 'Cream Drop'
  • Hemerocallis 'Desert Dreams'
  • Hemerocallis 'Destined to See'
  • Hemerocallis 'Double Cream' (d)
  • Hemerocallis 'Double Delicious' (d)
  • Hemerocallis 'Double River Wye' (d)
  • Hemerocallis 'Edgar Brown'
  • Hemerocallis 'El Desperado'
  • Hemerocallis 'Elaine Strutt'
  • Hemerocallis 'Gentle Shepherd'
  • Hemerocallis 'Going Bananas' (PBR)
  • Hemerocallis 'Golden Chimes'
  • Hemerocallis 'Golden Prize'
  • Hemerocallis 'Grape Magic'
  • Hemerocallis 'Humdinger'
  • Hemerocallis 'Hyperion'
  • Hemerocallis 'In Depth' (d)
  • Hemerocallis 'James Marsh'
  • Hemerocallis 'Joan Senior'
  • Hemerocallis 'Laughing Giraffe'
  • Hemerocallis 'Light the Way'
  • Hemerocallis 'Long Stocking'
  • Hemerocallis 'Longfields Twins'
  • Hemerocallis 'Mallard'
  • Hemerocallis 'Marion Vaughn'
  • Hemerocallis 'Mauna Loa'
  • Hemerocallis 'Meadow Sprite'
  • Hemerocallis 'Moontraveller'
  • Hemerocallis 'Morning Sun'
  • Hemerocallis 'Norton Beauté'
  • Hemerocallis 'Olive Bailey Langdon'
  • Hemerocallis 'Penny's Worth'
  • Hemerocallis 'Pink Damask'
  • Hemerocallis 'Pirate's Patch'
  • Hemerocallis 'Prairie Blue Eyes'
  • Hemerocallis 'Primal Scream'
  • Hemerocallis 'Queen of May'
  • Hemerocallis 'Red Precious'
  • Hemerocallis 'Royal Braid'
  • Hemerocallis 'Royal Celebration'
  • Hemerocallis 'Sammy Russell'
  • Hemerocallis 'Screaming Demon'
  • Hemerocallis 'Siloam June Bug'
  • Hemerocallis 'Spacecoast Starburst'
  • Hemerocallis 'Stafford'
  • Hemerocallis 'Startle'
  • Hemerocallis 'Stella de Oro'
  • Hemerocallis 'Summer Wine'
  • Hemerocallis 'Towhead'
  • Hemerocallis 'Walking on Sunshine'
  • Hemerocallis 'Wishing Well'
  • Hemerocallis 'Yellow Angel'
  • Hemerocallis 'Yellow Rain'
  • Hemiboea subcapitata
  • Hepatica transsilvanica
  • Heptacodium miconioides
  • Heptacodium miconioides Tianshan = 'Minhep' (PBR)
  • Heracleum stevenii
  • Hesperantha coccinea 'Major'
  • Hesperis matronalis var. albiflora 'Alba Plena' (d)
  • Heterotheca subaxillaris
  • Heuchera 'Autumn Glow' (Seasonal Selection Series)
  • Heuchera 'Beaujolais' (PBR)
  • Heuchera 'Binoche' (PBR)
  • Heuchera 'Black Sea'
  • Heuchera 'Blondie' (PBR) (Little Cutie Series)
  • Heuchera 'Bronze Beauty'
  • Heuchera 'Brownfinch'
  • Heuchera 'Caramel' (PBR)
  • Heuchera 'Cassis'
  • Heuchera 'Cherry Cola' (PBR)
  • Heuchera 'Citronelle'
  • Heuchera 'Coral Sea'
  • Heuchera 'Happy Moon'
  • Heuchera 'Lime Marmalade'
  • Heuchera 'Lime Rickey' (PBR)
  • Heuchera 'Madison Bride' (Fox Series)
  • Heuchera 'Midnight Rose'
  • Heuchera 'Paprika' (PBR)
  • Heuchera 'Paris' (PBR)
  • Heuchera 'Peppermint' (Little Cutie Series)
  • Heuchera 'Pink Pearls' (PBR)
  • Heuchera 'Pistache'
  • Heuchera 'Raspberry Regal'
  • Heuchera 'Red Sea'
  • Heuchera 'Sashay'
  • Heuchera 'Silver Scrolls' (PBR)
  • Heuchera 'Slater's Pink' (Fox Series)
  • Heuchera 'Snow Angel'
  • Heuchera 'Sugar Berry' (PBR) (Little Cutie Series)
  • Heuchera 'Thomas' (Fox Series)
  • Heuchera 'Venus'
  • Hibbertia aspera
  • Hibiscus sinosyriacus 'Lilac Queen'
  • Hieracium pannosum
  • Hieracium spilophaeum 'Blue Leaf'
  • Himalayacalamus falconeri
  • Hippeastrum cybister
  • Hippeastrum psittacinum
  • Hippeastrum striatum
  • Hippeastrum stylosum
  • Hippeastrum × acramannii
  • Hippeastrum × johnsonii
  • Hippeastrum (Sonatini Group) 'Sonatini Valentino'
  • Hippeastrum (Spider Group) 'Emerald'
  • Hippeastrum 'San Antonio Rose'
  • Hordeum marinum
  • Hosta
  • Hosta 'Blue Angel' (sieboldiana)
  • Hosta 'Blue Mouse Ears'
  • Hosta 'Cracker Crumbs' (v)
  • Hosta 'Devon Green'
  • Hosta 'Empress Wu' (PBR)
  • Hosta 'Fire Island'
  • Hosta 'Fireworks' (v)
  • Hosta 'First Blush'
  • Hosta 'Lemon Lime'
  • Hosta 'Mr Big'
  • Hosta 'Pandora's Box' (v)
  • Hosta 'Sum and Substance'
  • Hosta 'Twist of Lime' (v)
  • Hosta 'Venus' (d)
  • Humata tyermanii
  • Humulus lupulus 'Aureus' (f)
  • Hyacinthella glabrescens
  • Hyacinthella leucophaea
  • Hyacinthoides aristidis
  • Hyacinthoides ciliolata
  • Hyacinthoides hispanica
  • Hyacinthoides hispanica 'Dainty Maid'
  • Hyacinthoides hispanica 'Miss World'
  • Hyacinthoides hispanica 'Queen of the Pinks'
  • Hyacinthoides hispanica subsp. algeriensis
  • Hyacinthoides hispanica 'White City'
  • Hyacinthoides italica
  • Hyacinthoides lingulata
  • Hyacinthoides non-scripta 'Bracteata'
  • Hyacinthoides non-scripta long-bracteate, white-flowered
  • Hyacinthoides non-scripta 'Mill House Blue' (d)
  • Hyacinthoides non-scripta 'Mill House Pink' (d)
  • Hyacinthoides non-scripta 'Mill House White' (d)
  • Hyacinthoides non-scripta 'Wavertree'
  • Hyacinthoides reverchonii
  • Hyacinthus orientalis 'Gipsy Queen'
  • Hydrangea aspera subsp. sargentiana
  • Hydrangea macrophylla Dolce Farfalle = 'Dolfarf' (PBR) (H)
  • Hydrangea macrophylla Goldrush = 'Nehyosh' (L/v)
  • Hydrangea macrophylla Magical Jade = 'Hortmaja' (PBR) (Magical Series) (H)
  • Hydrangea macrophylla Romance = 'Youmenine' (PBR) (H/d)
  • Hydrangea macrophylla 'Aureovariegata' (L/v)
  • Hydrangea macrophylla 'Black Steel Zambia' (Black Steel Series) (H)
  • Hydrangea macrophylla 'Ganku Bo Chokens' (L)
  • Hydrangea macrophylla 'Love You Kiss' (PBR) (Hovaria Series) (L)
  • Hydrangea macrophylla 'Merveille Sanguine' (H)
  • Hydrangea macrophylla 'Mirai' (PBR) (H)
  • Hydrangea macrophylla 'Quadricolor' (L/v)
  • Hydrangea macrophylla 'Rotschwanz' (Teller Series) (L)
  • Hydrangea macrophylla 'Zebra' (PBR) (Black Steel Series) (H)
  • Hydrangea macrophylla 'Zorro' (PBR) (L)
  • Hydrangea paniculata Early Harry = 'Hpopr018'
  • Hydrangea paniculata Vanille Fraise = 'Renhy' (PBR)
  • Hydrangea paniculata 'Limelight' (PBR)
  • Hydrangea paniculata 'Phantom'
  • Hydrangea paniculata 'Silver Dollar'
  • Hydrangea seemannii
  • Hydrangea seemannii 'Roger Grounds' (v)
  • Hylomecon japonica
  • Hylotelephium erythrostictum 'Frosty Morn' (v)
  • Hylotelephium spectabile (Brilliant Group) 'Hot Stuff'
  • Hylotelephium spectabile 'Pink Chablis' (v)
  • Hylotelephium tatarinowii
  • Hylotelephium telephium (Atropurpureum Group) 'Karfunkelstein'
  • Hylotelephium telephium (Atropurpureum Group) 'Picolette'
  • Hylotelephium telephium (Atropurpureum Group) 'Purple Emperor'
  • Hylotelephium telephium (Atropurpureum Group) 'Ringmore Ruby'
  • Hylotelephium telephium 'Jennifer'
  • Hylotelephium telephium subsp. fabaria
  • Hylotelephium (Herbstfreude Group) 'Herbstfreude'
  • Hylotelephium (Herbstfreude Group) 'Jaws' (PBR)
  • Hylotelephium (Herbstfreude Group) 'Lajos' (v)
  • Hylotelephium Amber = 'Florseamb'
  • Hylotelephium 'Carl'
  • Hylotelephium 'Crazy Ruffles'
  • Hylotelephium 'Dark Jack'
  • Hylotelephium 'Joyce Henderson'
  • Hylotelephium 'Marchants Best Red'
  • Hylotelephium 'Mr Goodbud' (PBR)
  • Hylotelephium 'Red Cauli'
  • Hypericum androsaemum f. variegatum 'Mrs Gladis Brabazon' (v)
  • Hypericum cerastioides
  • Hypericum olympicum f. uniflorum 'Citrinum'
  • Hypericum × inodorum Golden Beacon = 'Wilhyp' (PBR)
  • Hypolepis millefolium
  • Ilex aquifolium 'Flavescens' (f)
  • Ilex aquifolium 'Golden Milkboy' (m/v)
  • Ilex aquifolium 'Handsworth New Silver' (f/v)
  • Ilex aquifolium 'Myrtifolia Aurea Maculata' (m/v)
  • Illicium simonsii
  • Impatiens omeiana 'Ice Storm'
  • Impatiens rothii
  • Incarvillea delavayi 'Snowtop'
  • Inula acaulis
  • Inula ensifolia 'Gold Star'
  • Inula helenium
  • Inula magnifica
  • Inula oculus-christi
  • Inulanthera calva
  • Ipheion uniflorum
  • Ipheion uniflorum 'Charlotte Bishop'
  • Ipheion uniflorum f. album
  • Ipheion uniflorum 'Froyle Mill'
  • Ipheion uniflorum 'Wisley Blue'
  • Ipheion 'Alberto Castillo'
  • Ipheion 'Alice'
  • Ipheion 'Diana'
  • Ipheion 'Judy'
  • Ipomoea cairica
  • Iris foetidissima
  • Iris foetidissima 'Aurea'
  • Iris foetidissima 'Fructu Albo'
  • Iris fulva
  • Iris germanica
  • Iris graminea
  • Iris japonica
  • Iris lacustris
  • Iris lazica 'Primrose Upward'
  • Iris lazica 'Richard Nutt'
  • Iris orientalis Mill.
  • Iris pallida Lam. 'Variegata' Hort. (v)
  • Iris pseudacorus 'Flore Pleno' (d)
  • Iris pseudacorus 'Roy Davidson'
  • Iris pseudacorus 'Sulphur Queen'
  • Iris pseudacorus 'Turnipseed'
  • Iris pseudacorus 'Variegata' (v)
  • Iris sanguinea 'Snow Queen'
  • Iris spuria subsp. notha
  • Iris suaveolens Hevolvus Group
  • Iris tectorum
  • Iris tuberosa
  • Iris × robusta 'Dark Aura'
  • Iris 'Aichi-no-kagayaki' (SpH)
  • Iris 'Apricorange' (TB)
  • Iris 'Apricot Silk' (IB)
  • Iris 'Austrian Sky' (SDB)
  • Iris 'Batik' (BB)
  • Iris 'Belise' (Spuria)
  • Iris 'Benton Sheila' (TB)
  • Iris 'Black Swan' (TB)
  • Iris 'Blue Denim' (SDB)
  • Iris 'Butter and Sugar' (Sib)
  • Iris Californian hybrids
  • Iris 'Cherry Garden' (SDB)
  • Iris 'Cimarron Strip' (TB)
  • Iris 'Dardanus' (Rc)
  • Iris 'Ewen' (Sib)
  • Iris 'Flight of Butterflies' (Sib)
  • Iris 'Harriette Halloway' (TB)
  • Iris 'Helen Proctor' (IB)
  • Iris 'Hello Darkness' (TB)
  • Iris 'Katharine Hodgkin' (Reticulata)
  • Iris 'La Senda' (Spuria)
  • Iris 'Little Blackfoot' (SDB)
  • Iris 'Little Tilgates' (CH)
  • Iris 'Marilyn Holmes' (Sib)
  • Iris 'Mer du Sud' (TB)
  • Iris Monspur Group
  • Iris 'Moon Silk' (Sib)
  • Iris 'Nada' (SpH)
  • Iris 'Orange Caper' (SDB)
  • Iris 'Orville Fay' (Sib)
  • Iris 'Pageant' (Sib)
  • Iris 'Primrose Cream' (Sib)
  • Iris 'Pure As Gold' (TB)
  • Iris 'Rikugi-sakura' (Sib)
  • Iris 'Roaring Jelly' (Sib)
  • Iris 'Rosalie Figge' (TB)
  • Iris 'Scramble' (Sib)
  • Iris 'Silver Edge' (Sib)
  • Iris 'Sinfonietta' (La)
  • Iris 'Summer Sky' (Sib)
  • Iris 'Titan's Glory' (TB)
  • Isatis tinctoria subsp. athoa
  • Isolepis cernua
  • Isopyrum thalictroides
  • Jacobaea candida
  • Jasminum fruticans
  • Jasminum stenalobium
  • Jeffersonia dubia
  • Juglans regia (F)
  • Juncus effusus f. spiralis
  • Kalanchoe beharensis
  • Kalanchoe beharensis 'Fang'
  • Kalanchoe fedtschenkoi 'Variegata' (v)
  • Kalanchoe humilis
  • Kalanchoe orgyalis
  • Kalanchoe tomentosa
  • Kalanchoe 'Tessa'
  • Kalimeris mongolica 'Antonia'
  • Kalimeris mongolica variegated (v)
  • Kalimeris 'Mon Jardin'
  • Kerria japonica 'Albescens'
  • Kirengeshoma palmata
  • Kirengeshoma palmata dwarf
  • Kirengeshoma palmata Koreana Group
  • Klasea lycopifolia
  • Kleinia grantii
  • Knautia macedonica
  • Knautia macedonica 'Thunder and Lightning' (PBR) (v)
  • Kniphofia caulescens
  • Kniphofia caulescens 'Coral Breakers'
  • Kniphofia caulescens 'John May'
  • Kniphofia citrina
  • Kniphofia linearifolia
  • Kniphofia multiflora 'November Glory'
  • Kniphofia northiae
  • Kniphofia pauciflora
  • Kniphofia rooperi
  • Kniphofia sarmentosa
  • Kniphofia thomsonii 'Kichocheo'
  • Kniphofia triangularis subsp. triangularis 'Light of the World'
  • Kniphofia uvaria
  • Kniphofia 'Ample Dwarf'
  • Kniphofia 'Apricot'
  • Kniphofia 'Apricot Souffle'
  • Kniphofia 'Barton Fever'
  • Kniphofia 'Bees' Lemon'
  • Kniphofia 'C.M. Prichard' Prichard
  • Kniphofia 'Champagne'
  • Kniphofia 'Chichi'
  • Kniphofia 'Cobra'
  • Kniphofia 'Coral Sceptre'
  • Kniphofia 'Creamsicle' (PBR) (Popsicle Series)
  • Kniphofia 'Dorset Sentry'
  • Kniphofia 'Drummore Apricot'
  • Kniphofia 'Ed's Findling'
  • Kniphofia 'Elvira' (PBR)
  • Kniphofia 'Ernest Mitchell'
  • Kniphofia 'Fiery Fred'
  • Kniphofia 'Fire Brand'
  • Kniphofia 'Florence Bedecked'
  • Kniphofia 'Frances Victoria'
  • Kniphofia 'Gilt Bronze'
  • Kniphofia 'Gladness'
  • Kniphofia 'Green Jade'
  • Kniphofia 'H.E. Beale'
  • Kniphofia 'Hen and Chickens'
  • Kniphofia 'Ice Queen'
  • Kniphofia 'Incandesce'
  • Kniphofia 'Jess's Delight'
  • Kniphofia 'John Benary'
  • Kniphofia 'Jonathan'
  • Kniphofia 'Little Maid'
  • Kniphofia 'Lord Roberts'
  • Kniphofia 'Luna'
  • Kniphofia 'Mango Popsicle' (PBR) (Popsicle Series)
  • Kniphofia 'Moonstone'
  • Kniphofia 'Nancy's Red'
  • Kniphofia 'New Sensation'
  • Kniphofia 'No Rhyme nor Reason'
  • Kniphofia 'Nobilis'
  • Kniphofia 'Old Court Seedling'
  • Kniphofia 'Painted Lady'
  • Kniphofia 'Percy's Pride'
  • Kniphofia 'Primrose Upward'
  • Kniphofia 'Red Rocket' (PBR)
  • Kniphofia 'Redhot Popsicle' (PBR) (Popsicle Series)
  • Kniphofia 'Rich Echoes'
  • Kniphofia 'Safranvogel'
  • Kniphofia 'Samuel's Sensation' Samuel
  • Kniphofia 'Sherbet Lemon'
  • Kniphofia 'Shiny Beast'
  • Kniphofia 'Springtime'
  • Kniphofia 'Star of Baden-Baden'
  • Kniphofia 'Tawny King'
  • Kniphofia 'Toffee Nosed'
  • Kniphofia 'Torchbearer'
  • Kniphofia 'Wol's Red Seedling'
  • Kniphofia 'Wrexham Buttercup'
  • Kniphofia 'Yellow Cheer'
  • Lachenalia bulbifera
  • Lachenalia ensifolia
  • Lachenalia flava
  • Lachenalia obscura
  • Lachenalia quadricolor
  • Lachenalia 'Romelia' (African Beauty Series)
  • Lachenalia 'Rosabeth' (African Beauty Series)
  • Lachenalia 'Rupert' (African Beauty Series)
  • Lamium maculatum
  • Lamium maculatum 'James Boyd Parselle'
  • Lamium orvala
  • Lamium orvala 'Silva'
  • Lamprocapnos spectabilis
  • Lamprocapnos spectabilis Valentine = 'Hordival' (PBR)
  • Lamprocapnos spectabilis 'Alba'
  • Lamprocapnos spectabilis 'Gold Heart' (PBR)
  • Lamprothyrsus hieronymi
  • Lathyrus grandiflorus
  • Lathyrus japonicus subsp. maritimus
  • Lathyrus latifolius
  • Lathyrus tuberosus
  • Lathyrus vernus
  • Lathyrus vernus 'Alboroseus'
  • Lathyrus vernus 'Cyaneus'
  • Lathyrus vernus 'Flaccidus'
  • Lathyrus vernus 'Madelaine'
  • Lathyrus vernus 'Rosenelfe'
  • Lathyrus vernus 'Spring Melody'
  • Lathyrus vernus 'Subtle Hints'
  • Lathyrus vernus var. albus
  • Lavandula × heterophylla (Gaston Allard Group) 'Meerlo' (v)
  • Lavatera arborea 'Variegata' (v)
  • Lavatera maritima
  • Lavatera × clementii 'Pink Frills'
  • Ledebouria socialis
  • Leontopodium pusillum
  • Leonurus cardiaca 'Grobbebol'
  • Leptopus chinensis
  • Leucanthemella serotina
  • Leucanthemum × superbum Darling Daisy = 'Kiemar'
  • Leucanthemum × superbum 'Anita Allen' (d)
  • Leucanthemum × superbum 'Becky'
  • Leucanthemum × superbum 'Esther Read' (d)
  • Leucanthemum × superbum 'Fiona Coghill' (d)
  • Leucanthemum × superbum 'Goldfinch' (PBR)
  • Leucanthemum × superbum 'Phyllis Smith'
  • Leucanthemum × superbum 'Shapcott Gossamer'
  • Leucanthemum × superbum 'Shapcott Ruffles'
  • Leucanthemum × superbum 'Shapcott Summer Clouds'
  • Leucanthemum × superbum 'Snehurka'
  • Leucanthemum × superbum 'Snowdrift'
  • Leucanthemum × superbum 'Victorian Secret' (PBR)
  • Leucojum aestivum
  • Leucojum aestivum 'Gravetye Giant'
  • Leucojum vernum
  • Leymus cinereus
  • Ligularia japonica 'Rising Sun'
  • Ligularia przewalskii
  • Ligularia 'Britt Marie Crawford' (PBR)
  • Ligularia 'Zepter'
  • Ligusticum hultenii
  • Ligusticum lucidum
  • Ligusticum scoticum variegated (v)
  • Ligustrum ibota 'Muster' (PBR) (v)
  • Ligustrum japonicum 'Rotundifolium'
  • Ligustrum lucidum 'Excelsum Superbum' (v)
  • Ligustrum ovalifolium 'Lemon and Lime' (v)
  • Lilium canadense (IXc/a)
  • Lilium lancifolium 'Flore Pleno' (IXc/d)
  • Lilium lancifolium 'Splendens' (IXc/d)
  • Lilium pardalinum (IXc/d)
  • Lilium 'Claude Shride' (IIc/d)
  • Lilium 'Fusion' (IVb-c/b-c)
  • Lilium 'Robina' (VIIIa-b/b-c)
  • Lilium 'Serene Angel' (VIIa/c)
  • Lilium 'Slate's Morning' (IIc/c)
  • Limonium platyphyllum
  • Limonium platyphyllum 'Robert Butler'
  • Linaria dalmatica
  • Linaria dalmatica × purpurea
  • Linaria genistifolia
  • Linaria purpurea
  • Linaria purpurea 'Brown's White Strain'
  • Linaria purpurea 'Canon Went'
  • Linaria repens
  • Linaria × sepium
  • Linaria 'Dial Park'
  • Linaria 'Florence Lily Sophia Brown'
  • Linaria 'Lemon Cream'
  • Linaria 'Peachy'
  • Linaria 'Pink Kisses'
  • Liriope muscari 'Okina' (v)
  • Liriope muscari 'Webster Wideleaf'
  • Lobelia fistulosa
  • Lobelia laxiflora var. angustifolia
  • Lobelia × speciosa 'Tania'
  • Lobelia × speciosa 'Tania's Sister'
  • Lonicera acuminata var. acuminata
  • Lonicera caprifolium
  • Lonicera caucasica
  • Lonicera elisae
  • Lonicera henryi 'Copper Beauty' (PBR)
  • Lonicera korolkowii
  • Lonicera ligustrina var. pileata
  • Lonicera ligustrina var. yunnanensis Edmée Gold = 'Briloni'
  • Lonicera periclymenum 'Graham Thomas'
  • Lonicera periclymenum 'Red Gables'
  • Lonicera similis var. delavayi
  • Lonicera × purpusii 'Winter Beauty'
  • Loropetalum chinense var. rubrum 'Fire Dance'
  • Loropetalum chinense var. rubrum 'Pearl' (PBR)
  • Lotononis aff. lotononoides
  • Lunaria annua
  • Lunaria annua 'Chedglow'
  • Lunaria annua var. albiflora
  • Lunaria annua 'Variegata' (v)
  • Lunaria rediviva
  • Lunaria rediviva 'Partway White' (v)
  • Luzula purpureosplendens
  • Luzula sylvatica 'Aurea'
  • Luzula sylvatica 'Marginata' (v)
  • Luzula sylvatica 'Thierry's Cream' (v)
  • Luzula × borreri 'Botany Bay' (v)
  • Lychnis chalcedonica 'Flore Pleno' (d)
  • Lychnis coronaria Gardeners' World = 'Blych' (d)
  • Lychnis flos-cuculi Jenny = 'Lychjen' (d)
  • Lychnis flos-cuculi Petit Henri = 'Iflyph'
  • Lychnis flos-cuculi 'Petite Jenny' (d)
  • Lychnis flos-cuculi 'White Robin'
  • Lychnis 'Hill Grounds'
  • Lysimachia barystachys
  • Lysimachia candida
  • Lysimachia ciliata 'Firecracker'
  • Lysimachia clethroides
  • Lysimachia clethroides 'Geisha' (v)
  • Lysimachia ephemerum
  • Lysimachia nemorum 'Lola Playle' (PBR)
  • Lysimachia punctata 'Alexander' (v)
  • Lysimachia punctata 'Gaulthier Brousse'
  • Lysimachia punctata 'Golden Glory' (v)
  • Lysimachia thyrsiflora
  • Lysimachia verticillaris
  • Lysimachia vulgaris subsp. davurica
  • Lysimachia Candela = 'Innlyscand'
  • Macleaya microcarpa 'Spetchley Ruby'
  • Macleaya × kewensis 'Flamingo'
  • Maianthemum bifolium subsp. kamtschaticum
  • Maianthemum fuscum
  • Maianthemum japonicum 'Ki-shiro-fukurin-fu' (v)
  • Maianthemum racemosum
  • Maianthemum racemosum subsp. amplexicaule 'Emily Moody'
  • Maianthemum tatsienense
  • Maihuenia poeppigii
  • Marrubium cylleneum 'Velvetissimum'
  • Massonia depressa
  • Massonia echinata
  • Massonia longipes
  • Massonia pseudoechinata
  • Massonia pustulata
  • Massonia pustulata purple-leaved
  • Massonia thunbergiana
  • Mathiasella bupleuroides 'Green Dream'
  • Matteuccia struthiopteris
  • Matteuccia struthiopteris 'The King'
  • Matthiola incana 'Low'
  • Melianthus major
  • Melica nutans
  • Melica uniflora f. albida
  • Melica uniflora 'Variegata' (v)
  • Melittis melissophyllum
  • Melittis melissophyllum pink-flowered
  • Melittis melissophyllum 'Royal Velvet Distinction' (PBR)
  • Melittis melissophyllum subsp. albida
  • Merwilla dracomontana
  • Merwilla plumbea
  • Milium effusum 'Aureum'
  • Miscanthus oligostachyus 'Nanus Variegatus' (v)
  • Miscanthus sinensis 'Adagio'
  • Miscanthus sinensis 'Gracillimus'
  • Miscanthus sinensis 'Grosse Fontäne'
  • Miscanthus sinensis 'Hinjo' (v)
  • Miscanthus sinensis 'Kleine Fontäne'
  • Miscanthus sinensis 'Malepartus'
  • Miscanthus sinensis 'Morning Light' (v)
  • Miscanthus sinensis 'Red Chief'
  • Miscanthus sinensis 'Silberfeder'
  • Miscanthus sinensis 'Strictus' (v)
  • Miscanthus sinensis var. condensatus 'Cabaret' (v)
  • Miscanthus sinensis var. condensatus 'Cosmopolitan' (v)
  • Miscanthus sinensis 'Variegatus' (v)
  • Miscanthus sinensis 'Yakushima Dwarf'
  • Miscanthus transmorrisonensis
  • Miscanthus × giganteus
  • Miscanthus × giganteus 'Gilt Edge' (v)
  • Moehringia muscosa
  • Molinia caerulea subsp. arundinacea 'Karl Foerster'
  • Molinia caerulea subsp. arundinacea 'Skyracer'
  • Molinia caerulea subsp. arundinacea 'Windspiel'
  • Molinia caerulea subsp. caerulea 'Heidebraut'
  • Molinia caerulea subsp. caerulea 'Moorhexe'
  • Monanthes laxiflora
  • Monarda fistulosa 'Wahpe Washtemna'
  • Monarda 'Gardenview Scarlet'
  • Monarda 'Violet Queen'
  • Moraea bipartita
  • Moraea spathulata
  • Moricandia moricandioides
  • Morina longifolia
  • Mosla dianthera
  • Muehlenbeckia complexa
  • Muhlenbergia dumosa
  • Muhlenbergia lindheimeri
  • Mukdenia rossii 'Karasuba'
  • Muscari anatolicum
  • Muscari armeniacum
  • Muscari armeniacum 'Gül'
  • Muscari armeniacum 'Saffier'
  • Muscari armeniacum 'Valerie Finnis'
  • Muscari aucheri var. bicolor
  • Muscari azureum
  • Muscari azureum 'Album'
  • Muscari azureum 'Bling Bling'
  • Muscari botryoides
  • Muscari botryoides 'Album'
  • Muscari caucasicum
  • Muscari coeleste
  • Muscari comosum
  • Muscari inconstrictum
  • Muscari latifolium
  • Muscari mirum
  • Muscari muscarimi
  • Muscari neglectum
  • Muscari parviflorum
  • Muscari pseudomuscari
  • Muscari tenuiflorum
  • Muscari aff. tenuiflorum
  • Muscari 'Arthur Henry'
  • Muscari 'Big Smile'
  • Muscari 'Blue Eyes'
  • Muscari 'Ivor's Pink'
  • Muscari 'Jenny Robinson'
  • Muscari 'Memory of Gary Fisher'
  • Muscari 'Pink Sunrise'
  • Muscari 'Rosy Sunrise'
  • Muscari 'Sky Blue'
  • Muscari 'Venus'
  • Muscari 'White Beauty'
  • Muscari 'Winter Amethyst'
  • Myosotis australis
  • Nandina domestica 'Fire Power'
  • Nandina domestica 'Seika' (PBR)
  • Napaea dioica
  • Narcissus assoanus (13)
  • Narcissus bulbocodium (13)
  • Narcissus bulbocodium subsp. bulbocodium var. conspicuus (13)
  • Narcissus cantabricus × romieuxii subsp. albidus var. zaianicus f. lutescens (13)
  • Narcissus eugeniae (13)
  • Narcissus fernandesii (13)
  • Narcissus obsoletus (13)
  • Narcissus romieuxii (13)
  • Narcissus romieuxii 'Joy Bishop' (10)
  • Narcissus romieuxii 'Julia Jane' (10)
  • Narcissus romieuxii subsp. albidus (13)
  • Narcissus romieuxii subsp. albidus var. zaianicus from Morocco
  • Narcissus romieuxii subsp. pallidus (13)
  • Narcissus romieuxii subsp. romieuxii var. rifanus (13)
  • Narcissus 'Calgary' (4)
  • Narcissus 'Cedric Morris' (1)
  • Narcissus 'Erlicheer' (4)
  • Narcissus 'Gipsy Queen' (1)
  • Narcissus 'Jack Snipe' (6)
  • Narcissus 'Solveig's Song' (12)
  • Neomarica caerulea
  • Nepeta grandiflora 'Bramdean'
  • Nepeta kubanica
  • Nepeta racemosa
  • Nepeta sibirica
  • Nepeta stenantha
  • Nepeta × faassenii Junior Walker = 'Novanepjun' (PBR)
  • Nepeta 'Blue Dragon'
  • Nepeta 'Hill Grounds'
  • Nepeta 'Six Hills Giant'
  • Nepeta 'Six Hills Gold' (v)
  • Nephrolepis exaltata 'Verona'
  • Nerine bowdenii 'Alba'
  • Nerine bowdenii 'Emma'
  • Nerine bowdenii 'Eric Smith'
  • Nerine bowdenii 'Gletsjer'
  • Nerine bowdenii Irish clone
  • Nerine bowdenii 'Isabel'
  • Nerine bowdenii 'John Crisp'
  • Nerine bowdenii 'Kathleen Pollock'
  • Nerine bowdenii 'Linda Vista'
  • Nerine bowdenii 'Mark Fenwick'
  • Nerine bowdenii 'Marney Rogerson'
  • Nerine bowdenii 'Mollie Cowie' (v)
  • Nerine bowdenii 'Mount Stewart'
  • Nerine bowdenii 'Nikita'
  • Nerine bowdenii 'Ostara'
  • Nerine bowdenii 'Pink Frostwork'
  • Nerine bowdenii 'Pink Surprise'
  • Nerine bowdenii 'Quinton Wells'
  • Nerine bowdenii 'Quinton Wells' pale yellow-leaved
  • Nerine bowdenii 'Richard Blakeway-Phillips'
  • Nerine bowdenii 'Robert Smith'
  • Nerine bowdenii 'Sheila Owen'
  • Nerine bowdenii 'Stam 63'
  • Nerine bowdenii Ted Allen No 2
  • Nerine bowdenii 'Tess Allen'
  • Nerine gracilis
  • Nerine hirsuta
  • Nerine humilis from Bredasdorp, South Africa
  • Nerine krigei
  • Nerine laticoma
  • Nerine pudica pink-flowered
  • Nerine sarniensis
  • Nerine sarniensis 'Borde Hill White'
  • Nerine sarniensis 'Hanley Castle'
  • Nerine sarniensis 'Mother of Pearl'
  • Nerine sarniensis 'Mottistone'
  • Nerine sarniensis var. corusca 'Major'
  • Nerine sarniensis var. curvifolia f. fothergillii
  • Nerine undulata (Flexuosa Group) 'Alba'
  • Nerine undulata Alta Group
  • Nerine 'Afterglow'
  • Nerine 'Alexandra'
  • Nerine 'Aurora'
  • Nerine 'Baghdad'
  • Nerine 'Belladonna'
  • Nerine 'Bennett-Poë'
  • Nerine 'Berlioz'
  • Nerine 'Blanchefleur'
  • Nerine 'Canasta'
  • Nerine 'Caryatid'
  • Nerine 'Catkin'
  • Nerine 'Clent Charm'
  • Nerine 'Codora'
  • Nerine 'Corlette'
  • Nerine 'Countess of Mulgrave'
  • Nerine 'Cranfield'
  • Nerine 'Cynthia Chance'
  • Nerine 'Diana Oliver'
  • Nerine 'Doris Vos'
  • Nerine Elegance Series
  • Nerine 'Elspeth'
  • Nerine 'Exbury Red'
  • Nerine 'Falaise'
  • Nerine 'Firelight'
  • Nerine 'Giraffe'
  • Nerine 'Harlequin'
  • Nerine 'Helena'
  • Nerine 'Hertha Berg'
  • Nerine 'Iman'
  • Nerine 'Janet'
  • Nerine 'Jenny Wren'
  • Nerine 'King Leopold'
  • Nerine 'Kinn McIntosh'
  • Nerine 'Kyle'
  • Nerine 'Lady Cynthia Colville'
  • Nerine 'Lady Downe'
  • Nerine 'Lady Eleanor Keane'
  • Nerine 'Lady Havelock-Allen'
  • Nerine 'Lady Llewellyn'
  • Nerine 'Lady St Aldwyn'
  • Nerine 'Lambourne'
  • Nerine 'Lawlord'
  • Nerine 'Leila Hughes'
  • Nerine 'Long Island Beauty'
  • Nerine 'Lucinda'
  • Nerine 'Lyndhurst Salmon'
  • Nerine 'Malvern'
  • Nerine 'Maria'
  • Nerine 'Meadowbankii'
  • Nerine 'Miss E. Cator'
  • Nerine 'Miss Florence Brown'
  • Nerine 'Miss Frances Clarke'
  • Nerine 'Mr John'
  • Nerine 'Mrs Cooper'
  • Nerine 'Mrs Dent Brocklehurst'
  • Nerine 'Natasha'
  • Nerine 'Nena'
  • Nerine 'Oberon'
  • Nerine 'Ophelia'
  • Nerine 'Owslebury'
  • Nerine 'Pink Triumph'
  • Nerine 'Quivotina'
  • Nerine 'Regina'
  • Nerine 'Rembrandt'
  • Nerine 'Rose Princess'
  • Nerine 'Rushmere Star'
  • Nerine 'Ruth'
  • Nerine 'Snowflake'
  • Nerine 'Stephanie'
  • Nerine 'Susan Norris'
  • Nerine 'Tweedledee'
  • Nerine 'Vicky'
  • Nerine 'Yealm King'
  • Nerine 'Yealm Queen'
  • Nerine 'Zeal Giant'
  • Nerine 'Zeal Grilse'
  • Nerine 'Zennor'
  • Nierembergia repens
  • Niphidium crassifolium
  • Nolina lindheimeriana
  • Nolina texana
  • Nothoscordum montevidense
  • Nothoscordum ostenii
  • Ochagavia elegans
  • Oemleria cerasiformis
  • Oenothera acaulis
  • Oenothera fruticosa subsp. glauca 'Erica Robin' (v)
  • Oenothera lindheimeri 'Blaze' (PBR) (G)
  • Omphalodes cappadocica 'Cherry Ingram'
  • Omphalodes verna 'Elfenauge'
  • Omphalodes verna 'Grandiflora'
  • Omphalodes 'Blue Eyes'
  • Onoclea sensibilis
  • Onychium contiguum
  • Onychium japonicum
  • Ophiopogon chingii
  • Ophiopogon intermedius
  • Ophiopogon jaburan 'Vittatus' (v)
  • Ophiopogon planiscapus f. leucanthus
  • Ophiopogon planiscapus 'Kokuryu'
  • Ophiopogon planiscapus 'Little Tabby' (v)
  • Opopanax hispidus
  • Opuntia phaeacantha
  • Opuntia phaeacantha var. major
  • Opuntia polyacantha var. erinacea
  • Oreopanax dactylifolius
  • Oresitrophe rupifraga
  • Origanum laevigatum
  • Ornithogalum arcuatum
  • Ornithogalum lanceolatum
  • Ornithogalum magnum
  • Ornithogalum narbonense
  • Ornithogalum ponticum
  • Ornithogalum pyrenaicum
  • Orthophytum gurkenii
  • Oryzopsis miliacea
  • Osmunda claytoniana
  • Otatea acuminata
  • Oxalis acetosella var. subpurpurascens
  • Oxalis arenaria
  • Oxalis articulata 'Alba'
  • Oxalis articulata f. crassipes 'Alba'
  • Oxalis bowiei
  • Oxalis karroica
  • Oxalis magellanica
  • Oxalis massoniana
  • Oxalis melanosticta
  • Oxalis oregana
  • Oxalis oregana f. smalliana
  • Oxalis oregana white-flowered
  • Oxalis perdicaria 'Citrino'
  • Oxalis spiralis subsp. vulcanicola 'Sunset Velvet'
  • Oxalis triangularis subsp. papilionacea
  • Ozothamnus selago
  • Pachyphragma macrophyllum
  • Pachysandra axillaris
  • Pachysandra procumbens
  • Pachysandra procumbens 'Angola' (v)
  • Paederota lutea
  • Paeonia anomala subsp. veitchii
  • Paeonia arietina
  • Paeonia cambessedesii
  • Paeonia daurica
  • Paeonia daurica subsp. coriifolia
  • Paeonia daurica subsp. mlokosewitschii
  • Paeonia delavayi (S)
  • Paeonia emodi
  • Paeonia lactiflora White Sarah Bernhardt
  • Paeonia lactiflora 'Duchesse de Nemours'
  • Paeonia lactiflora 'Gardenia'
  • Paeonia lactiflora 'Green Halo'
  • Paeonia lactiflora 'Inspecteur Lavergne'
  • Paeonia lactiflora 'Jan van Leeuwen'
  • Paeonia lactiflora 'Kansas'
  • Paeonia lactiflora 'Madame Claude Tain'
  • Paeonia lactiflora 'Madame Gaudichau'
  • Paeonia lactiflora 'Marie Lemoine'
  • Paeonia lactiflora 'Mother's Choice'
  • Paeonia lactiflora 'Mr G.F. Hemerik'
  • Paeonia lactiflora 'Nippon Beauty'
  • Paeonia lactiflora 'Pink Cameo'
  • Paeonia lactiflora 'Raspberry Sundae'
  • Paeonia lactiflora 'Sarah Bernhardt'
  • Paeonia lactiflora 'Shirley Temple'
  • Paeonia lactiflora 'White Wings'
  • Paeonia lactiflora 'Whitleyi Major'
  • Paeonia lactiflora 'Wladyslawa'
  • Paeonia ludlowii (S)
  • Paeonia mascula
  • Paeonia mascula subsp. russoi
  • Paeonia officinalis
  • Paeonia officinalis 'James Crawford Weguelin'
  • Paeonia officinalis subsp. microcarpa
  • Paeonia peregrina 'Otto Froebel'
  • Paeonia × festiva 'Rosea Plena' (d)
  • Paeonia × festiva 'Rubra Plena' (d)
  • Paeonia 'Bartzella' (d)
  • Paeonia 'Blaze'
  • Paeonia 'Buckeye Belle' (d)
  • Paeonia 'Claire de Lune'
  • Paeonia 'Coral Charm'
  • Paeonia 'Coral Sunset'
  • Paeonia 'Flame'
  • Paeonia 'Lemon Chiffon'
  • Paeonia 'Mackinac Grand'
  • Paeonia 'Paula Fay'
  • Paeonia 'Pink Hawaiian Coral'
  • Paeonia 'Scarlet O'Hara'
  • Paeonia 'Starlight'
  • Paesia scaberula
  • Pancratium maritimum
  • Panicum virgatum 'Heiliger Hain'
  • Panicum virgatum 'Külsenmoor'
  • Panicum virgatum 'Rotstrahlbusch'
  • Panicum virgatum 'Squaw'
  • Panicum virgatum 'Wood's Variegated' (v)
  • Papaver cambricum
  • Papaver cambricum var. aurantiacum
  • Papaver guerlekense
  • Papaver pilosum subsp. spicatum
  • Papaver rupifragum
  • Papaver somniferum (Paeoniiflorum Group) 'Scarlet Paeony' (d)
  • Papaver triniifolium
  • Papaver (Oriental Group) 'Aglaja'
  • Papaver (Oriental Group) 'Beauty of Livermere' clonal
  • Papaver (Oriental Group) 'Forncett Summer'
  • Papaver (Oriental Group) 'May Queen' (d)
  • Papaver (Oriental Group) 'Patty's Plum'
  • Papaver (Oriental Group) 'Rembrandt'
  • Papaver (Oriental Group) 'Royal Wedding'
  • Papaver (Oriental Group) 'Ruffled Patty' (PBR)
  • Papaver (Oriental Group) 'Snow Goose'
  • Paradisea lusitanica
  • Parathelypteris beddomei
  • Parolinia ornata
  • Parthenocissus henryana
  • Pasithea caerulea
  • Paspalum quadrifarium
  • Pastinaca sativa
  • Paulownia fargesii ambig.
  • Paulownia tomentosa
  • Pelargonium crispum 'Variegatum' (Sc/v)
  • Pelargonium endlicherianum
  • Pelargonium 'Ardens'
  • Pelargonium 'Bontrosai' (PBR) (Sc)
  • Pelargonium 'Crocodile' (I/C/d)
  • Pelargonium 'Morwenna' (R)
  • Pelargonium 'Paton's Unique' (U/Sc)
  • Pelargonium 'Phyllis Variegated' (U/v)
  • Pelargonium 'Red Gables'
  • Pelargonium 'Red Robin' (R)
  • Pelargonium 'Vectis Glitter' (Z/St)
  • Pelargonium 'Voodoo' (U)
  • Pellaea rotundifolia
  • Pellaea viridis
  • Peltaria alliacea
  • Pennisetum alopecuroides
  • Pennisetum alopecuroides 'Red Head'
  • Pennisetum macrourum blue-leaved
  • Pennisetum 'Fairy Tails'
  • Penstemon confertus
  • Penstemon cyananthus var. utahensis
  • Penstemon digitalis 'Isa'
  • Penstemon Red Rocks = 'P008s'
  • Penstemon 'Alice Hindley'
  • Penstemon 'Andenken an Friedrich Hahn'
  • Penstemon 'Dark Towers' (PBR)
  • Penstemon 'Elgar Crown of India' (Elgar Series)
  • Penstemon 'Elgar Firefly' (Elgar Series)
  • Penstemon 'Elgar Light of Life' (Elgar Series)
  • Penstemon 'Elgar Nimrod' (Elgar Series)
  • Penstemon 'Juicy Grape' (Ice Cream Series)
  • Penstemon 'Melting Candy' (Ice Cream Series)
  • Penstemon 'Razzle Dazzle'
  • Penstemon 'Strawberries and Cream' (Ice Cream Series)
  • Penstemon 'Sweet Cherry' (Ice Cream Series)
  • Penstemon 'Windsor Red'
  • Persicaria affinis 'Donald Lowndes'
  • Persicaria alpina
  • Persicaria amplexicaulis 'Alba'
  • Persicaria amplexicaulis 'Blackfield' (PBR)
  • Persicaria amplexicaulis 'Blush Clent'
  • Persicaria amplexicaulis 'Clent Charm'
  • Persicaria amplexicaulis 'Dikke Floskes'
  • Persicaria amplexicaulis 'Fascination'
  • Persicaria amplexicaulis 'Fat Domino' (PBR)
  • Persicaria amplexicaulis 'Firedance'
  • Persicaria amplexicaulis 'Golden Arrow' (v)
  • Persicaria amplexicaulis 'JS Caliente' (PBR)
  • Persicaria amplexicaulis 'Rosy Clent'
  • Persicaria amplexicaulis 'Spotted Eastfield' (v)
  • Persicaria bistorta dwarf, shell-pink-flowered
  • Persicaria bistorta 'Hohe Tatra'
  • Persicaria bistorta subsp. carnea
  • Persicaria bistorta 'Superba'
  • Persicaria macrophylla
  • Persicaria macrophylla 'Ellie's Pink'
  • Persicaria nakaii
  • Persicaria virginiana (Variegated Group) 'Painter's Palette' (v)
  • Persicaria virginiana 'Brushstrokes'
  • Persicaria virginiana var. filiformis
  • Persicaria virginiana var. filiformis 'Ballet'
  • Persicaria virginiana var. filiformis 'Compton's Red'
  • Persicaria virginiana Variegated Group (v)
  • Persicaria wallichii
  • Persicaria 'Indian Summer'
  • Persicaria 'Silver Dragon' (PBR)
  • Petasites frigidus var. palmatus
  • Petasites paradoxus
  • Petunia exserta
  • Peucedanum ostruthium 'Daphnis' (v)
  • Peucedanum verticillare
  • Phaedranassa viridiflora
  • Phaenosperma globosa
  • Phlebodium aureum
  • Phlebodium aureum 'Glaucum'
  • Phlebodium aureum var. areolatum
  • Phlebodium pseudoaureum
  • Phleum hirsutum
  • Phlomis italica
  • Phlomis purpurea
  • Phlomis russeliana
  • Phlomis russeliana 'Dappled Shade' (v)
  • Phlomis samia L. 'Green Glory'
  • Phlomis tuberosa 'Amazone'
  • Phlomis 'Le Sud'
  • Phlox amplifolia
  • Phlox amplifolia 'Apanatschi'
  • Phlox carolina 'Magnificence'
  • Phlox carolina 'Miss Lingard'
  • Phlox paniculata
  • Phlox paniculata White Flame = 'Bartwentynine' (PBR)
  • Phlox paniculata 'Alba Grandiflora'
  • Phlox paniculata 'Becky Towe' (PBR) (v)
  • Phlox paniculata 'Blue Paradise'
  • Phlox paniculata 'Border Gem'
  • Phlox paniculata 'Düsterlohe'
  • Phlox paniculata 'David'
  • Phlox paniculata 'Eva Cullum'
  • Phlox paniculata 'Franz Schubert'
  • Phlox paniculata 'Goldmine' (PBR) (v)
  • Phlox paniculata 'Harlequin' (v)
  • Phlox paniculata 'Herbstwalzer'
  • Phlox paniculata 'Iris'
  • Phlox paniculata 'Jade' (Neon Series)
  • Phlox paniculata 'Jeff's Blue'
  • Phlox paniculata 'Juliglut'
  • Phlox paniculata 'Lavendelwolke'
  • Phlox paniculata 'Lavender Lady'
  • Phlox paniculata 'Little Laura'
  • Phlox paniculata 'Manoir d'Hézèques'
  • Phlox paniculata 'Maude Stella Dagley'
  • Phlox paniculata 'Monica Lynden-Bell'
  • Phlox paniculata 'Mount Fuji'
  • Phlox paniculata 'Norah Leigh' (v)
  • Phlox paniculata 'P.D. Williams'
  • Phlox paniculata 'Pastorale'
  • Phlox paniculata 'Pink Posie' (v)
  • Phlox paniculata 'Popeye'
  • Phlox paniculata 'Prince of Orange'
  • Phlox paniculata 'Rosa Pastell'
  • Phlox paniculata 'Shockwave' (v)
  • Phlox paniculata 'Speed Limit 45'
  • Phlox paniculata 'Starfire'
  • Phlox paniculata 'Steeple Bumpstead'
  • Phlox paniculata 'Sterling Brocade' (v)
  • Phlox paniculata 'Tiara' (PBR) (d)
  • Phlox paniculata var. alba
  • Phlox × arendsii 'Andrew'
  • Phlox × arendsii 'Autumn's Pink Explosion'
  • Phlox × arendsii 'Dylan'
  • Phlox × arendsii 'Gary'
  • Phlox × arendsii 'Luc's Lilac'
  • Phlox × arendsii 'Miss Jill' (Spring Pearl Series)
  • Phlox × arendsii 'Paul'
  • Phlox × arendsii 'Utopia'
  • Phlox Violet Flame = 'Barsixtyone' (PBR)
  • Phlox 'Minnie Pearl'
  • Phormium Black Velvet = 'Seivel' (PBR)
  • Photinia × fraseri Pink Marble = 'Cassini' (v)
  • Phycella cyrtanthoides
  • Phygelius × rectus 'Jodie Southon'
  • Phyllostachys aureosulcata f. spectabilis
  • Phyllostachys nigra
  • Phyllostachys viridiglaucescens
  • Physocarpus opulifolius All Black = 'Minall2' (PBR)
  • Physocarpus opulifolius 'Dart's Gold'
  • Physochlaina orientalis
  • Physostegia virginiana 'Summer Snow'
  • Physostegia virginiana var. speciosa 'Variegata' (v)
  • Pileostegia viburnoides
  • Pilosella aurantiaca
  • Pimpinella major 'Rosea'
  • Pinellia cordata
  • Pinellia pedatisecta
  • Pitcairnia heterophylla
  • Pitcairnia pungens
  • Pitcairnia punicea
  • Pitcairnia ringens
  • Pittosporum tenuifolium 'Irene Paterson' (m/v)
  • Pittosporum tenuifolium 'Petite Plum'
  • Pittosporum tenuifolium 'Purpureum' (m)
  • Plectranthus ernstii
  • Plectranthus ernstii blue-flowered
  • Pleioblastus pygmaeus var. pygmaeus 'Mini'
  • Podocarpus nivalis 'Kilworth Cream' (m/v)
  • Podophyllum delavayi
  • Podophyllum pleianthum
  • Podophyllum versipelle 'Spotty Dotty' (PBR) (v)
  • Podophyllum 'Kaleidoscope' (v)
  • Polemonium yezoense var. hidakanum 'Purple Rain'
  • Polemonium × jacobaea
  • Polemonium 'Lambrook Mauve'
  • Polemonium 'Northern Lights'
  • Polianthes elongata
  • Polianthes tuberosa 'Pink Sapphire'
  • Polianthes tuberosa 'Yellow Baby'
  • Pollia japonica
  • Polygonatum glaberrimum
  • Polygonatum humile 'Variegatum' (v)
  • Polygonatum latifolium
  • Polygonatum multiflorum L.
  • Polygonatum odoratum 'Flore Pleno' (d)
  • Polygonatum odoratum 'Goldilocks' (v)
  • Polygonatum odoratum var. pluriflorum 'Variegatum' (v)
  • Polygonatum orientale
  • Polygonatum punctatum Royle ex Kunth
  • Polygonatum verticillatum 'Rubrum'
  • Polygonatum × hybridum
  • Polygonatum × hybridum 'Betberg'
  • Polygonatum × hybridum 'Nanum'
  • Polygonatum × hybridum 'Striatum' (v)
  • Polypodiodes formosana
  • Polypodium azoricum
  • Polypodium cambricum
  • Polypodium cambricum (Pulcherrimum Group) 'Pulcherrimum Addison'
  • Polypodium cambricum (Pulcherrimum Group) 'Pulchritudine'
  • Polypodium cambricum (Semilacerum Group) 'Falcatum O'Kelly'
  • Polypodium cambricum 'Cristatum'
  • Polypodium cambricum 'Hornet'
  • Polypodium cambricum 'Oakleyae'
  • Polypodium cambricum 'Prestonii'
  • Polypodium cambricum Pulcherrimum Group
  • Polypodium cambricum 'Richard Kayse'
  • Polypodium cambricum 'Whilharris'
  • Polypodium glycyrrhiza 'Lawrence Crocker'
  • Polypodium glycyrrhiza 'Longicaudatum'
  • Polypodium glycyrrhiza 'Malahatense' (sterile)
  • Polypodium interjectum
  • Polypodium interjectum 'Ramosum Hillman'
  • Polypodium macaronesicum
  • Polypodium scouleri
  • Polypodium vulgare
  • Polypodium vulgare 'Bifidomulticeps'
  • Polypodium vulgare 'Cornubiense Multifidum'
  • Polypodium vulgare 'Parsley'
  • Polypodium vulgare 'Ramosum Hillman'
  • Polypodium 'Dancing Girls'
  • Polypodium 'Whitley Giant'
  • Polystichum acrostichoides
  • Polystichum makinoi
  • Polystichum munitum
  • Polystichum neolobatum
  • Polystichum setiferum (Divisilobum Group) 'Divisilobum Wollaston'
  • Polystichum setiferum (Divisilobum Group) 'Herrenhausen'
  • Polystichum setiferum (Plumosomultilobum Group) 'Plumosomultilobum Densum'
  • Polystichum setiferum Plumosomultilobum Group
  • Polystichum × dycei
  • Populus alba 'Richardii'
  • Populus balsamifera
  • Potentilla reptans 'Pleniflora' (d)
  • Prangos ferulacea
  • Primula auricula 'Cloudy Bay' (Au/B)
  • Primula auricula 'Fiddler's Green' (Au/d)
  • Primula auricula 'Marie Crousse' (Au/d)
  • Primula auricula 'Matthew Yates' (Au/d)
  • Primula auricula 'Old Irish Blue' (Au/B)
  • Primula auricula 'Shalford' (Au/d)
  • Primula auricula 'Stromboli' (Au/d)
  • Primula auricula 'Tregor Orange' (Au/d)
  • Primula auricula 'Walton Heath' (Au/d)
  • Primula capitata (Ca)
  • Primula carniolica (Au)
  • Primula florindae 'Ray's Ruby' (Si)
  • Primula forbesii (Mo)
  • Primula polyneura (Co)
  • Primula sieboldii 'Snowdrop' (Co)
  • Primula veris 'Katy McSparron' (Pr/d)
  • Primula vulgaris (Pr/Prim)
  • Primula vulgaris Drumcliffe = 'K74' (PBR) (Pr/Prim)
  • Primula vulgaris Innisfree = 'K72' (PBR) (Pr/Prim)
  • Primula vulgaris 'Avondale' (Kennedy Irish Series) (Pr/Prim)
  • Primula vulgaris 'Carrigdale' (Pr/Prim)
  • Primula vulgaris 'Claddagh' (Pr/Prim)
  • Primula vulgaris 'Dunbeg' (Kennedy Irish Series) (Pr/Prim)
  • Primula vulgaris 'Glengarriff' (Kennedy Irish Series) (Pr/Prim)
  • Primula vulgaris 'Golden Gem' (Pr/Prim/d)
  • Primula vulgaris 'Tarragem Sparkling Ruby' (Pr/Prim/d)
  • Primula vulgaris 'Vanilla Cream' (Pr/Prim)
  • Primula × pubescens 'Christine' (Au)
  • Primula (Wanda Group) 'Wanda Jack-in-the-Green' (Pr/Prim)
  • Primula 'Annemijne' (Pr/Poly)
  • Primula 'Barbara Midwinter' (Pr)
  • Primula 'Cisca' (Pr)
  • Primula 'Dark Rosaleen' (Pr/Poly)
  • Primula 'David Valentine' (Pr/Poly)
  • Primula 'Don Keefe' (Pr/Poly)
  • Primula 'Elizabeth Browning' (Pr/Poly)
  • Primula 'Elizabeth Killelay' (PBR) (Pr/Poly/d)
  • Primula Firefly Group (Pr/Poly)
  • Primula 'Groenekan's Glorie' (Pr/Prim)
  • Primula 'Guinevere' (Pr/Poly)
  • Primula 'Hall Barn Blue' (Pr/Prim)
  • Primula 'Kusum Krishna' (Au)
  • Primula 'Lilian Foster' (Pr/Prim)
  • Primula 'Mauve Mist' (Pr/Poly)
  • Primula 'Perle von Bottrop' (Pr/Prim)
  • Primula 'Petticoat' (Pr/Prim/d)
  • Primula 'Romeo' (Pr/Prim)
  • Primula 'Rosemary Cottage' (Pr/Poly)
  • Primula 'Rowena' (Pr/Prim)
  • Primula 'Sir Bedivere' (Pr/Prim)
  • Primula 'Strong Beer' (Pr/Prim/d)
  • Primula 'Tie Dye' (Pr/Prim)
  • Primula 'Tomato Red' (Pr/Prim)
  • Primula 'Wanda' (Pr/Prim)
  • Primulina dryas 'Hisako'
  • Prunus laurocerasus 'Mount Vernon'
  • Prunus mume 'Beni-chidori'
  • Prunus prostrata
  • Prunus tenella
  • Prunus tenella 'Fire Hill'
  • Pseudopanax 'Moa's Toes'
  • Psoralea pinnata
  • Pteris cretica 'Mayi' (v)
  • Pteris cretica 'Wimsettii'
  • Pteris nipponica
  • Pteris tremula
  • Pteris umbrosa
  • Pteris wallichiana
  • Pterocactus hickenii
  • Pulmonaria longifolia 'Ankum'
  • Pulmonaria officinalis 'Blue Mist'
  • Pulmonaria officinalis Cambridge Blue Group
  • Pulmonaria rubra 'David Ward' (v)
  • Pulmonaria saccharata 'Leopard'
  • Pulmonaria Opal = 'Ocupol'
  • Pulmonaria 'Benediction'
  • Pulmonaria 'Blake's Silver'
  • Pulmonaria 'Blue Ensign'
  • Pulmonaria 'Diana Clare'
  • Pulmonaria 'Glacier'
  • Pulmonaria 'Majesté'
  • Pulmonaria 'Mary Mottram'
  • Pulmonaria 'Open Skies' (v)
  • Pulmonaria 'Raspberry Coulis'
  • Pulmonaria 'Raspberry Splash' (PBR)
  • Pulmonaria 'Richard Nutt'
  • Pulmonaria 'Trevi Fountain'
  • Puya alpestris subsp. zoellneri
  • Puya chilensis
  • Puya dyckioides
  • Puya laxa
  • Puya venusta
  • Puya
  • Pyrrosia hastata
  • Pyrrosia lingua 'Ogon Nishiki' (v)
  • Pyrrosia polydactyla
  • Pyrrosia sheareri
  • Pyrus amygdaliformis
  • Quercus rubra 'Sunshine'
  • Quercus suber
  • Quercus 'Monument'
  • Ranunculus aconitifolius 'Flore Pleno' (d)
  • Ranunculus acris 'Citrinus'
  • Ranunculus amplexicaulis
  • Ranunculus bulbosus 'F.M. Burton'
  • Ranunculus constantinopolitanus 'Plenus' (d)
  • Ranunculus gramineus 'Pardal'
  • Ranunculus montanus double-flowered (d)
  • Ranunculus nivicola
  • Ranunculus parnassiifolius
  • Ranunculus × prietoi 'Moonlight'
  • Ratibida pinnata
  • Reineckea carnea
  • Reineckea carnea 'Variegata' (v)
  • Reineckea aff. carnea from Sichuan
  • Rhamnus alaternus 'Argenteovariegata' (v)
  • Rhamnus imeretina
  • Rhaponticum centaureoides
  • Rheum australe
  • Rheum australe 'Pink Marble' (v)
  • Rheum palmatum 'Bowles's Crimson'
  • Rheum palmatum 'Ferguson's Red'
  • Rheum palmatum 'Hadspen Crimson'
  • Rheum palmatum 'Red Herald'
  • Rheum ribes
  • Rheum
  • Rheum × hybridum 'Hawke's Champagne'
  • Rheum 'Ace of Hearts'
  • Rhodiola heterodonta
  • Rhodiola pachyclados
  • Rhodiola rosea
  • Ribes griffithii
  • Ribes laurifolium 'Mrs Amy Doncaster'
  • Ribes laurifolium Rosemoor form
  • Ribes menziesii
  • Ribes odoratum
  • Ribes sanguineum 'Elkington's White'
  • Ribes sanguineum 'Koja'
  • Ribes speciosum
  • Ribes valdivianum
  • Ribes × beatonii
  • Rodgersia pinnata 'Chocolate Wing'
  • Rodgersia purdomii hort.
  • Rodgersia 'Herkules'
  • Rodgersia 'Irish Bronze'
  • Rohdea delavayi
  • Rohdea japonica
  • Rohdea japonica 'Godaishu' (v)
  • Rohdea japonica 'Gunjaku' (v)
  • Rohdea japonica long-leaved
  • Rohdea japonica 'Miyakonojo' (v)
  • Rohdea japonica 'Talbot Manor' (v)
  • Rohdea japonica 'Tama-jishi' (v)
  • Rohdea japonica 'Tuneshige Rokujo' (v)
  • Rohdea wattii
  • Roldana cristobalensis
  • Roldana petasitis
  • Romneya coulteri
  • Rosa banksiae 'Lutea' (Ra/d)
  • Rosa banksiae var. banksiae (Ra/d)
  • Rosa banksiae var. normalis (Ra)
  • Rosa chinensis 'Semperflorens' (S)
  • Rosa chinensis 'White Beauty' (S)
  • Rosa glauca Pourr. (S)
  • Rosa spinosissima 'Cedric Morris'
  • Rosa spinosissima 'Merthyr Mawr'
  • Rosa spinosissima 'William III'
  • Rosa × odorata (Sanguinea Group) 'Bengal Crimson' (Ch)
  • Rosa × odorata (Sanguinea Group) 'Bob's Beauty' (Ch)
  • Rosa × odorata 'Mutabilis' (Ch)
  • Rosa × odorata 'Pallida' (Ch)
  • Rosa × odorata 'Viridiflora' (Ch)
  • Rosa Eyes for You = 'Pejbigeye' (F)
  • Rosa La Sévillana = 'Meigekanu' (F/GC)
  • Rosa Rambling Rosie = 'Horjasper' (PBR) (Ra)
  • Rosa Super Trouper = 'Fryleyeca' (PBR) (F)
  • Rosa 'Dunwich Rose' (SpH)
  • Rosa 'Guinée' (ClHT)
  • Rosa 'The Fairy' (Poly)
  • Roscoea cautleyoides
  • Roscoea purpurea 'Brown Peacock'
  • Roscoea purpurea 'Cinnamon Stick'
  • Roscoea purpurea f. rubra
  • Roscoea purpurea 'Spice Island'
  • Rosularia libanotica
  • Rubus caesius
  • Rubus fruticosus agg. 'Variegatus' (v)
  • Rubus idaeus 'Aureus' (F)
  • Rubus rosifolius 'Coronarius' (d)
  • Rubus
  • Rudbeckia fulgida var. deamii
  • Rudbeckia laciniata
  • Rudbeckia laciniata 'Herbstsonne'
  • Rudbeckia laciniata 'Hortensia' (d)
  • Rudbeckia laciniata 'Starcadia Razzle Dazzle'
  • Rudbeckia maxima
  • Rudbeckia paniculata
  • Rudbeckia subtomentosa
  • Rudbeckia subtomentosa 'Loofahsa Wheaten Gold'
  • Rudbeckia Summerina Brown = 'Et Rdb 03' (PBR) (Summerina Series)
  • Rudbeckia Summerina Yellow = 'Et Rdb 02' (PBR) (Summerina Series)
  • Rumex acetosa
  • Rumex acetosa subsp. acetosa 'Saucy' (v)
  • Rumex alpinus
  • Rumex hydrolapathum
  • Ruscus hypoglossum
  • Saccharum officinarum purple-stemmed
  • Salix alba 'Aurea'
  • Salix alba var. sericea
  • Salix gracilistyla 'Mount Aso'
  • Salix magnifica
  • Salix purpurea 'Gracilis'
  • Salix purpurea 'Nancy Saunders' (f)
  • Salix × fragilis 'Bouton Aigu'
  • Salix × sepulcralis 'Dart's Snake' (m)
  • Salvia atropatana
  • Salvia aurea 'Kirstenbosch'
  • Salvia azurea var. grandiflora
  • Salvia canariensis
  • Salvia deserta
  • Salvia forsskaolii
  • Salvia microphylla 'Maroon'
  • Salvia nemorosa 'Amethyst'
  • Salvia nemorosa 'Caradonna'
  • Salvia nemorosa 'Rose Queen'
  • Salvia pratensis
  • Salvia pratensis 'Indigo'
  • Salvia reptans from western Texas
  • Salvia × superba 'Adrian'
  • Salvia × sylvestris 'Blaukönigin'
  • Salvia × sylvestris 'Dear Anja'
  • Salvia × sylvestris 'Lye End'
  • Salvia × sylvestris 'Rhapsody in Blue' (PBR)
  • Salvia Love and Wishes = 'Serendip6' (PBR)
  • Salvia 'Amistad' (PBR)
  • Salvia 'Blue Note' (PBR)
  • Salvia 'La Mancha'
  • Salvia 'Nachtvlinder'
  • Salvia 'Royal Bumble'
  • Salvia 'Serenade'
  • Sambucus ebulus
  • Sambucus formosana
  • Sambucus himalayensis
  • Sambucus javanica
  • Sambucus mexicana
  • Sambucus miquelii
  • Sambucus nigra 'Ardwall'
  • Sambucus nigra 'Aurea'
  • Sambucus nigra 'Aureomarginata' (v)
  • Sambucus nigra 'Bont Oosterwoldë'
  • Sambucus nigra 'Bradet'
  • Sambucus nigra 'Broadway' (v)
  • Sambucus nigra 'Cae Rhos Lligwy'
  • Sambucus nigra 'Castledean'
  • Sambucus nigra 'Dart's Greenlace'
  • Sambucus nigra 'Dolomite' (v)
  • Sambucus nigra 'Donau'
  • Sambucus nigra f. laciniata
  • Sambucus nigra f. porphyrophylla Black Tower = 'Eiffel 1' (PBR)
  • Sambucus nigra f. porphyrophylla Blue Sheen = 'Hyfsheen'
  • Sambucus nigra f. porphyrophylla 'Eva' (PBR)
  • Sambucus nigra f. porphyrophylla 'Gerda' (PBR)
  • Sambucus nigra f. porphyrophylla 'Guincho Purple'
  • Sambucus nigra f. porphyrophylla 'Purple Pete'
  • Sambucus nigra f. porphyrophylla 'Thundercloud'
  • Sambucus nigra f. viridis
  • Sambucus nigra 'Frances' (v)
  • Sambucus nigra 'Franzi'
  • Sambucus nigra 'Fructuluteo'
  • Sambucus nigra 'Godshill' (F)
  • Sambucus nigra 'Haschberg'
  • Sambucus nigra 'Hillier's Dwarf'
  • Sambucus nigra 'Ina'
  • Sambucus nigra 'Körsör' (F)
  • Sambucus nigra 'Linearis'
  • Sambucus nigra 'Long Tooth'
  • Sambucus nigra 'Lutea Punctata'
  • Sambucus nigra 'Madonna' (v)
  • Sambucus nigra 'Marginata' (v)
  • Sambucus nigra 'Marion Bull' (v)
  • Sambucus nigra 'Marmorata'
  • Sambucus nigra 'Mint Julep'
  • Sambucus nigra 'Monstrosa'
  • Sambucus nigra 'Nana'
  • Sambucus nigra 'Naomi'
  • Sambucus nigra 'Norfolk Speckled' (v)
  • Sambucus nigra 'Pingo Trail'
  • Sambucus nigra 'Plena' (d)
  • Sambucus nigra 'Pulverulenta' (v)
  • Sambucus nigra 'Pyramidalis'
  • Sambucus nigra 'Riese aus Vossloch'
  • Sambucus nigra 'Robert Piggin' (v)
  • Sambucus nigra 'Sambu' (F)
  • Sambucus nigra 'Samdal' (F)
  • Sambucus nigra 'Samidan' (F)
  • Sambucus nigra 'Samnor' (F)
  • Sambucus nigra 'Sampo' (F)
  • Sambucus nigra 'Samyl' (F)
  • Sambucus nigra 'Serenade'
  • Sambucus nigra subsp. caerulea
  • Sambucus nigra subsp. canadensis 'Adams' (F)
  • Sambucus nigra subsp. canadensis 'Aurea'
  • Sambucus nigra subsp. canadensis 'Johns'
  • Sambucus nigra subsp. canadensis 'Maxima'
  • Sambucus nigra subsp. canadensis 'Rubra'
  • Sambucus nigra subsp. canadensis 'York' (F)
  • Sambucus nigra 'Urban Lace'
  • Sambucus nigra var. rotundifolia
  • Sambucus palmensis
  • Sambucus racemosa
  • Sambucus racemosa 'Altamont'
  • Sambucus racemosa 'Plumosa Aurea'
  • Sambucus racemosa subsp. kamtschatica
  • Sambucus racemosa 'Sutherland Gold'
  • Sambucus racemosa 'Tenuifolia'
  • Sambucus racemosa var. callicarpa
  • Sambucus racemosa var. melanocarpa
  • Sambucus racemosa var. pubens
  • Sambucus racemosa var. sieboldiana
  • Sambucus tigranii
  • Sambucus williamsii subsp. coreana
  • Sambucus '14th December'
  • Sambucus 'Black Cherry'
  • Sambucus 'Cappuccino'
  • Sambucus 'Chocolate Marzipan'
  • Sambucus 'Ed's Brown'
  • Sambucus 'Florence'
  • Sambucus 'Gate into Field'
  • Sambucus 'Milk Chocolate'
  • Sambucus 'Milk Chocolate Orange'
  • Sambucus 'The Sweet One'
  • Sambucus 'Vermilion Summers'
  • Sanguisorba applanata
  • Sanguisorba canadensis
  • Sanguisorba hakusanensis
  • Sanguisorba menziesii
  • Sanguisorba obtusa
  • Sanguisorba officinalis
  • Sanguisorba officinalis 'Arnhem'
  • Sanguisorba officinalis 'Lemon Splash' (v)
  • Sanguisorba officinalis 'Red Thunder'
  • Sanguisorba officinalis 'Shiro-fukurin' (v)
  • Sanguisorba tenuifolia
  • Sanguisorba tenuifolia 'Purpurea'
  • Sanguisorba tenuifolia var. alba
  • Sanguisorba 'Blackthorn'
  • Sanguisorba 'Cangshan Cranberry'
  • Sanguisorba 'Little Angel'
  • Sanguisorba 'Pink Tanna'
  • Sanguisorba 'Tanna'
  • Sanicula epipactis
  • Saponaria intermedia
  • Saponaria officinalis 'Betty Arnold' (d)
  • Saponaria × lempergii 'Fritz Lemperg'
  • Saponaria × lempergii 'Max Frei'
  • Sarcococca confusa
  • Sarcococca wallichii
  • Sarracenia purpurea
  • Saruma henryi
  • Sauromatum gaoligongense
  • Sauromatum venosum
  • Saururus cernuus 'Hertford Streaker' (v)
  • Saussurea pseudoalpina
  • Saxifraga hirsuta (11)
  • Saxifraga spathularis (11)
  • Saxifraga stolonifera (5)
  • Saxifraga stolonifera large-flowered (5)
  • Saxifraga (London Pride Group) 'Miss Chambers' (11)
  • Saxifraga Black Ruby (fortunei) (5)
  • Saxifraga Crystal Pink (fortunei) (5/v)
  • Saxifraga 'Gelbes Monster' (fortunei) (5)
  • Saxifraga 'Hsitou Silver' (stolonifera) (5)
  • Saxifraga 'Maroon Beauty' (stolonifera) (5)
  • Saxifraga 'Pink Pagoda' (nipponica) (5)
  • Saxifraga 'Rubrifolia' (fortunei) (5)
  • Saxifraga 'Shiranami' (fortunei) (5)
  • Saxifraga 'Silver Velvet' (fortunei) (5/v)
  • Saxifraga 'Tricolor' (stolonifera) (5)
  • Saxifraga 'Wada' (fortunei) (5)
  • Scabiosa columbaria subsp. ochroleuca 'Moon Dance'
  • Scabiosa lachnophylla
  • Scabiosa 'Butterfly Blue'
  • Scadoxus membranaceus
  • Scadoxus multiflorus subsp. katherinae
  • Scadoxus multiflorus subsp. multiflorus
  • Scadoxus puniceus
  • Schefflera taiwaniana
  • Schizachyrium scoparium 'Prairie Blues'
  • Schizocarphus nervosus
  • Schizophragma hydrangeoides 'Shiro-dai-fukurin' (v)
  • Schizophragma hydrangeoides var. concolor 'Moonlight'
  • Schizophragma hydrangeoides var. hydrangeoides 'Roseum'
  • Scilla amoena
  • Scilla bifolia
  • Scilla bithynica
  • Scilla cilicica
  • Scilla greilhuberi
  • Scilla hohenackeri
  • Scilla hyacinthoides
  • Scilla ingridiae
  • Scilla liliohyacinthus
  • Scilla madeirensis
  • Scilla melaina
  • Scilla messeniaca from Greece
  • Scilla mischtschenkoana 'Tubergeniana'
  • Scilla monophyllos
  • Scilla obtusifolia subsp. intermedia
  • Scilla persica
  • Scilla peruviana
  • Scilla peruviana 'Alba'
  • Scilla peruviana var. ifniensis
  • Scilla peruviana var. venusta
  • Scilla rosenii 'Cloudy Sky'
  • Scilla sardensis
  • Scilla 'Blue Giant'
  • Scirpus 'Green Mist'
  • Scopolia carniolica var. brevifolia
  • Scutellaria incana
  • Sedum acre 'Aureum'
  • Sedum dasyphyllum
  • Sedum hispanicum var. minus
  • Sedum kamtschaticum var. ellacombeanum
  • Sedum ochroleucum
  • Sedum rupestre 'Angelina'
  • Sedum rupestre 'Monstrosum Cristatum'
  • Sedum takesimense Atlantis = 'Nonsitnal' (v)
  • Sedum 'Manoir de Gaudon'
  • Seemannia nematanthodes 'Evita'
  • Selaginella braunii
  • Selaginella martensii 'Jori' (v)
  • Selinum carvifolium
  • Selinum filicifolium
  • Selinum wallichianum
  • Semele androgyna
  • Sempervivum 'Bronco'
  • Sempervivum 'Dark Beauty'
  • Sempervivum 'Hey-hey'
  • Sempervivum 'Lipari'
  • Sempervivum 'Marland Ruby'
  • Sempervivum 'Othello'
  • Sempervivum 'Red Delta'
  • Sempervivum 'Virgil'
  • Senecio candidans Angel Wings = 'Senaw' (PBR)
  • Senecio squalidus subsp. aethnensis
  • Senna artemisioides
  • Serratula tinctoria var. seoanei
  • Seseli hippomarathrum
  • Seseli lehmannii
  • Seseli montanum
  • Sesleria caerulea 'Malvern Mop'
  • Sesleria heufleriana
  • Setaria viridis
  • Sidalcea candida
  • Sidalcea 'Candy Girl'
  • Sidalcea 'Little Princess' (PBR)
  • Sidalcea 'Reverend Page Roberts'
  • Sidalcea 'Sussex Beauty'
  • Sideritis syriaca
  • Silene dioica 'Valley High' (v)
  • Silene fimbriata
  • Silphium integrifolium
  • Silphium perfoliatum
  • Silphium perfoliatum 'Maya'
  • Silphium terebinthinaceum
  • Silphium trifoliatum
  • Sinacalia tangutica
  • Sinningia tubiflora
  • Sinopodophyllum hexandrum
  • Sisyrinchium striatum 'Aunt May' (v)
  • Skimmia japonica 'Red Riding Hood' (f)
  • Skimmia × confusa 'Kew Green' (m)
  • Smyrnium perfoliatum
  • Smyrnium rotundifolium
  • Solanum atropurpureum
  • Solanum pseudocapsicum variegated (v)
  • Solanum pyracanthum
  • Solidago flabelliformis
  • Solidago flexicaulis
  • Solidago rugosa
  • Solidago rugosa 'Fireworks'
  • Solidago rugosa 'Loydser Crown'
  • Solidago speciosa
  • Solidago × luteus 'Lemore'
  • Solidago 'Dennis Strange'
  • Solidago 'Hiddigeigei' (v)
  • Solidago 'Super'
  • Sophora davidii
  • Sophora howinsula
  • Sophora Sun King = 'Hilsop' (PBR)
  • Sorbus graeca
  • Sparrmannia africana
  • Spathantheum orbignyanum
  • Sphaeralcea incana 'Sourup'
  • Sphaeralcea 'Childerley'
  • Sphaeralcea 'Newleaze Coral'
  • Spigelia marilandica
  • Spiraea 'Tracy' (PBR)
  • Sporobolus heterolepis
  • Stachys byzantina 'Big Ears'
  • Stachys byzantina 'Limelight'
  • Stachys byzantina 'Silver Carpet'
  • Stachys thirkei
  • Stachyurus praecox
  • Steganotaenia araliacea
  • Stenotaenia macrocarpa
  • Sternbergia lutea Angustifolia Group
  • Sternbergia sicula 'John Marr'
  • Stevia rebaudiana
  • Stipa calamagrostis 'Allgäu'
  • Stipa gigantea
  • Stipa gigantea 'Gold Fontaene'
  • Stipa pseudoichu
  • Stipa tenuissima
  • Strobilanthes attenuata
  • Strobilanthes dyeriana
  • Strumaria discifera subsp. bulbifera
  • Symphyotrichum ericoides 'Erlkönig'
  • Symphyotrichum ericoides 'First Snow'
  • Symphyotrichum ericoides var. prostratum 'Snow Flurry'
  • Symphyotrichum ericoides 'Vimmer's Delight'
  • Symphyotrichum falcatum
  • Symphyotrichum falcatum var. commutatum
  • Symphyotrichum laeve 'Arcturus'
  • Symphyotrichum laeve 'Glow in the Dark'
  • Symphyotrichum laeve 'White Climax'
  • Symphyotrichum lateriflorum 'Bleke Bet'
  • Symphyotrichum lateriflorum 'Chloe'
  • Symphyotrichum lateriflorum 'Lovely'
  • Symphyotrichum novae-angliae 'Andenken an Alma Pötschke'
  • Symphyotrichum novae-angliae 'Badsey Pink'
  • Symphyotrichum novae-angliae 'Barr's Violet'
  • Symphyotrichum novae-angliae 'Brightness'
  • Symphyotrichum novae-angliae 'Dapper Tapper'
  • Symphyotrichum novae-angliae 'Harrington's Pink'
  • Symphyotrichum novae-angliae 'Kylie'
  • Symphyotrichum novae-angliae 'Lachsglut'
  • Symphyotrichum novae-angliae 'Lye End Beauty'
  • Symphyotrichum novae-angliae 'Mandie's Choice'
  • Symphyotrichum novae-angliae 'Marina Wolkonsky'
  • Symphyotrichum novae-angliae 'Pink Parfait'
  • Symphyotrichum novae-angliae 'Primrose Upward'
  • Symphyotrichum novae-angliae 'Purple Dome'
  • Symphyotrichum novae-angliae 'Sayer's Croft'
  • Symphyotrichum novae-angliae 'Warm Throng'
  • Symphyotrichum novi-belgii Bahamas = 'Dasone' (Island Series)
  • Symphyotrichum novi-belgii Barbados = 'Dastwo' (Island Series)
  • Symphyotrichum novi-belgii Samoa = 'Dasthree' (Island Series)
  • Symphyotrichum novi-belgii 'Fellowship'
  • Symphyotrichum novi-belgii 'Porzellan'
  • Symphyotrichum pilosum
  • Symphyotrichum tradescantii
  • Symphyotrichum turbinellum Lindl.
  • Symphyotrichum × amethystinum
  • Symphyotrichum 'Ann Leys' (PBR)
  • Symphyotrichum 'Beauté du Nord'
  • Symphyotrichum 'Blütenregen'
  • Symphyotrichum 'Coombe Fishacre'
  • Symphyotrichum 'Little Carlow' (cordifolium hybrid)
  • Symphyotrichum 'Nicholas'
  • Symphyotrichum 'Pinwheel'
  • Symphyotrichum 'Pixie Dark Eye' (ericoides hybrid)
  • Symphyotrichum 'Pixie Red Eye' (ericoides hybrid)
  • Symphyotrichum 'Prairie Perse'
  • Symphyotrichum 'Prairie Purple'
  • Symphyotrichum 'Primrose Path'
  • Symphyotrichum 'Ringdove' (ericoides hybrid)
  • Symphyotrichum 'Sea Spray'
  • Symphyotrichum 'Soft Lass'
  • Symphyotrichum 'Sunhelene'
  • Symphytum tuberosum
  • Symphytum × uplandicum 'Axminster Gold' (v)
  • Symphytum × uplandicum 'Droitwich' (v)
  • Symphytum × uplandicum 'Moorland Heather'
  • Symphytum 'Lambrook Sunrise'
  • Syncolostemon 'Candy Kisses'
  • Syneilesis aconitifolia
  • Syneilesis aff. tagawae
  • Syringa vulgaris variegated double (d/v)
  • Taccarum weddellianum
  • Tanacetum corymbosum
  • Tanacetum macrophyllum 'Cream Klenza'
  • Tanacetum niveum
  • Tanacetum parthenium 'Aureum'
  • Tanacetum parthenium 'Rowallane' (d)
  • Tanacetum vulgare 'Golden Fleece'
  • Tanacetum vulgare 'Isla Gold' (v)
  • Taraxacum faeroense
  • Tellima grandiflora
  • Tellima grandiflora 'Bob's Choice'
  • Tellima grandiflora 'Delphine' (v)
  • Tellima grandiflora 'Forest Frost'
  • Tellima grandiflora Odorata Group
  • Tellima grandiflora 'Purpurteppich'
  • Tellima grandiflora Rubra Group
  • Tetrapanax papyrifer 'Rex'
  • Teucrium fruticans 'Compactum'
  • Thalictrum aquilegiifolium 'Thundercloud'
  • Thalictrum dasycarpum
  • Thalictrum delavayi
  • Thalictrum delavayi 'Album'
  • Thalictrum delavayi 'Hewitt's Double' (d)
  • Thalictrum delavayi var. decorum
  • Thalictrum filamentosum
  • Thalictrum flavum 'Illuminator'
  • Thalictrum flavum subsp. glaucum 'Ruth Lynden-Bell'
  • Thalictrum flavum subsp. glaucum 'Silver Sparkler' (v)
  • Thalictrum ichangense
  • Thalictrum ichangense 'Purple Marble'
  • Thalictrum isopyroides
  • Thalictrum kiusianum
  • Thalictrum lucidum
  • Thalictrum rochebruneanum
  • Thalictrum tuberosum
  • Thalictrum tuberosum 'Rosy Hardy'
  • Thalictrum uchiyamae
  • Thalictrum Splendide White = 'Fr21034' (PBR)
  • Thalictrum 'Anne' (PBR)
  • Thalictrum 'Black Stockings'
  • Thalictrum 'Elin'
  • Thalictrum 'Splendide'
  • Thalictrum 'Tukker Princess'
  • Thamnocalamus crassinodus 'Kew Beauty'
  • Thelypteris kunthii
  • Thermopsis lanceolata
  • Thermopsis montana var. montana
  • Thladiantha dubia
  • Thysanolaena latifolia
  • Tiarella 'Pink Skyrocket' (PBR)
  • Tibouchina paratropica
  • Tibouchina urvilleana 'Edwardsii'
  • Tibouchina urvilleana variegated (v)
  • Tigridia orthantha 'Red-Hot Tiger'
  • Tinantia pringlei
  • Tinantia pringlei variegated (v)
  • Tofieldia coccinea
  • Toona sinensis 'Flamingo' (v)
  • Trachelium caeruleum 'Black Knight'
  • Trachelospermum asiaticum Chili & Vanilla = 'Livano'
  • Trachelospermum asiaticum 'Golden Memories'
  • Trachelospermum asiaticum 'Kulu Chirimen'
  • Trachelospermum asiaticum 'Pink Showers'
  • Trachelospermum asiaticum 'Summer Sunset'
  • Trachelospermum asiaticum 'Theta'
  • Trachelospermum jasminoides 'Variegatum' (v)
  • Trachelospermum jasminoides 'Wilsonii'
  • Trachycarpus fortunei
  • Trachystemon orientalis
  • Tradescantia pallida 'Kartuz Giant'
  • Tradescantia (Andersoniana Group) 'Blue and Gold'
  • Tragopogon porrifolius
  • Trautvetteria carolinensis
  • Trautvetteria carolinensis var. japonica
  • Tricyrtis formosana 'Kestrel' (v)
  • Tricyrtis hirta 'Golden Gleam'
  • Tricyrtis hirta 'Variegata' (v)
  • Tricyrtis macrantha subsp. macranthopsis
  • Tricyrtis ohsumiensis 'Fukurin-fu' (v)
  • Tricyrtis 'Lightning Strike' (v)
  • Tricyrtis 'Moonlight Treasure' (PBR)
  • Trifolium repens 'Harlequin' (v)
  • Trifolium repens 'William'
  • Trifolium rubens 'Peach Pink'
  • Trillium grandiflorum
  • Triteleia grandiflora
  • Triteleia hyacinthina
  • Triteleia laxa 'Koningin Fabiola'
  • Triteleia peduncularis
  • Triteleia 'Double Touch' (d)
  • Triteleia 'Rudy'
  • Triteleia 'Silver Queen'
  • Trollius × cultorum 'Alabaster'
  • Tropaeolum ciliatum
  • Tropaeolum majus 'Red Wonder'
  • Tropaeolum tricolor
  • Tulbaghia alliacea
  • Tulbaghia simmleri 'Cheryl Renshaw'
  • Tulbaghia violacea 'Silver Lace' (v)
  • Tulbaghia 'Fairy Snow'
  • Tulbaghia 'Fairy Star'
  • Tulbaghia 'John May's Special'
  • Tulbaghia 'Purple Eye'
  • Tulbaghia 'Snow White'
  • Tulipa acuminata (15)
  • Tulipa ferganica (15)
  • Tulipa gesneriana (15)
  • Tulipa lanata (15)
  • Tulipa linifolia (Batalinii Group) 'Red Gem' (15)
  • Tulipa montana (15)
  • Tulipa orphanidea Whittallii Group (15)
  • Tulipa sprengeri Trotter's form (15)
  • Tulipa sylvestris (15)
  • Tulipa tschimganica (15)
  • Tulipa undulatifolia (15)
  • Tulipa 'Eternal Flame' (2)
  • Tulipa 'Little Beauty' (15)
  • Tupistra aurantiaca
  • Tupistra chinensis 'Eco China Ruffles'
  • Tupistra grandistigma
  • Tupistra jinshanensis
  • Typhonium giganteum
  • Umbilicus oppositifolius 'Jane's Reverse' (v)
  • Valeriana officinalis 'Chiri Fu' (v)
  • Valeriana pyrenaica
  • Valeriana wallrothii
  • Veratrum album
  • Veratrum album 'Lorna's Green'
  • Veratrum album subsp. lobelianum
  • Veratrum album var. flavum
  • Veratrum formosanum
  • Veratrum nigrum
  • Veratrum viride
  • Verbascum creticum
  • Verbascum faurei
  • Verbascum olympicum
  • Verbascum 'Christo's Yellow Lightning'
  • Verbena bonariensis
  • Verbena officinalis var. grandiflora 'Bampton'
  • Verbena rigida
  • Vernonia angustifolia × missurica
  • Vernonia arkansana 'Mammuth'
  • Vernonia fasciculata
  • Vernonia glauca
  • Veronica austriaca subsp. teucrium 'Crater Lake Blue'
  • Veronica gentianoides
  • Veronica longifolia 'Charlotte' (PBR) (v)
  • Veronica longifolia 'Marietta' (PBR)
  • Veronica prostrata 'Loddon Blue'
  • Veronica spicata 'Pink Panther' (PBR)
  • Veronica spicata subsp. hybrida 'Elaine's Form'
  • Veronica umbrosa 'Georgia Blue'
  • Veronica 'Ellen Mae'
  • Veronicastrum latifolium
  • Veronicastrum virginicum 'Album'
  • Veronicastrum virginicum 'Fascination'
  • Veronicastrum virginicum 'Lavendelturm'
  • Veronicastrum 'Adoration'
  • Veronicastrum 'Red Arrows'
  • Vesalea floribunda
  • Viburnum cinnamomifolium
  • Viburnum farreri 'Nanum'
  • Viburnum odoratissimum var. awabuki
  • Viburnum plicatum f. tomentosum Kilimanjaro = 'Jww1' (PBR)
  • Viburnum plicatum f. tomentosum 'Mariesii'
  • Vinca difformis subsp. sardoa
  • Vinca herbacea
  • Vinca major subsp. hirsuta (Boiss.) Stearn
  • Vinca major 'Wojo's Jem' (v)
  • Vinca minor f. alba
  • Vinca minor f. alba 'Alba Variegata' (v)
  • Vinca minor 'Mrs Betty James' (d)
  • Vincetoxicum hirundinaria
  • Vincetoxicum nigrum
  • Viola mandshurica 'Fuji Dawn' (v)
  • Viola odorata 'Bethan Davies' (d/Vt)
  • Viola odorata Rosea Group (Vt)
  • Viola odorata 'Violett Charm' (Vt)
  • Viola sororia 'Priceana' (Vt)
  • Viola sororia 'Speckles' (Vt/v)
  • Viola 'Bruneau' (dVt)
  • Viola 'Donau' (Vt)
  • Viola 'D'Udine' (dPVt)
  • Viola 'Elizabeth Lee' (Vt)
  • Viola 'Glanmore'
  • Viola 'Governor Herrick' (Vt)
  • Viola 'Jupiter' (Va)
  • Viola 'Königin Charlotte' (Vt)
  • Viola 'Lianne' (Vt)
  • Viola 'Lydia Groves' (Vt)
  • Viola 'Silver Samurai' (Vt)
  • Viola 'Sulfurea' (Vt)
  • Vitis vinifera 'Incana' (O/B)
  • Vitis vinifera 'Purpurea' (O/B)
  • Vitis vinifera 'Spetchley Red' (O/B)
  • Watsonia galpinii
  • Watsonia marlothii
  • Weldenia candida
  • Wisteria floribunda 'Mon-nishiki' (v)
  • Woodsia obtusa
  • Woodwardia fimbriata
  • Wulfenia carinthiaca
  • Wurmbea stricta
  • Xanthorhiza simplicissima
  • Ypsilandra cavaleriei
  • Ypsilandra thibetica
  • Yucca cernua
  • Yucca glauca
  • Yucca harrimaniae
  • Yucca recurvifolia Banana Split = 'Monca' (v)
  • Yucca recurvifolia 'Gold Stream' (v)
  • Yucca rupicola
  • Zantedeschia aethiopica 'Crowborough'
  • Zantedeschia aethiopica 'Glencoe'
  • Zantedeschia aethiopica 'Green Goddess'
  • Zantedeschia aethiopica 'Mr Martin'
  • Zantedeschia aethiopica 'Pershore Fantasia' (v)
  • Zantedeschia aethiopica 'White Gnome'
  • Zantedeschia albomaculata subsp. albomaculata
  • Zantedeschia odorata
  • Zantedeschia 'Kiwi Blush'
  • Zantedeschia 'White Giant'
  • Zephyranthes 'Krakatau'
  • Zephyranthes La Bufa Rosa Group
  • Zosima absinthifolia

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