Join the RHS today and support our charitable work
Keep track of your plants with reminders & care tips – all to help you grow successfully
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Free entry to RHS members at selected times »
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Join the RHS today and support our charity
Begin a new search
All ratings refer to the UK growing conditions unless otherwise stated. Minimum
temperature ranges (in degrees C) are shown in brackets
AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
'Alison Taylor' grows to 60cm in height, with up to 5 flowers per stem, the standards ochre yellow fading to cream in the centre, the falls bright lemon yellow edged with ochre yellow
'Hello Darkness' is a vigorous, spreading plant with glaucous foliage to 65cm, erect, or lax at edge of clump. Standards are overlapping, purple with blue and violet tones, paling towards centre. Falls are drooping to incurved, velvety with crimped margins, deep purple violet approaching black. Beard fairly conspicuous, violet blue. Mid season
'Cocktail Tropical' is a rhizomatous, clump-forming perennial to 90cm tall with sword-shaped, grey-green foliage. Eight to ten blooms per stem are borne in summer each with light apricot-coloured standards, an orange beard and purple-violet falls held nearly horizontal
'Hot Spot' is a cormous perennial to 75cm tall forming a clump of upright, sword-shaped leaves. Upward-facing yellow flowers with red stripes radiating from the base of each petal are borne on arching stems from midsummer into autumn
'Violet Icing' is an herbaceous perennial to 1m in height, with erect, glaucous green foliage and large, predominantly white flowers flecked and edged with light violet; falls streaked with violet
'Simple Gifts' is a clump-forming perennial up to 85cm high, with narrow foliage, and flowers in early summer; each stem with three white flowers, the standards flushed and veined with pale lilac, and the horizontal falls flushed and faintly veined with yellow and with a faint flush of purple at the base
'Palm Springs' is a dwarf, bulbous plant, to 12cm in height, with erect, linear, mid-green leaves. The early spring flowers are royal-blue with a darker blue throat, speckled white and a bright yellow central band on the falls
'Celebration Song' is a rhizomatous perennial, 75-100 cm high, with glaucous leaves and scented, ruffled flowers in early summer. Flower have soft apricot standards, soft lavender falls and bright orange beards
'Arctic Fancy' is a rhizomatous perennial to 45cm high with greyish-green sword-like foliage. Flowers, produced from late spring to early summer have white waved standards with broad violet margins, white falls with a narrow violet edge, dark veins fading into white and a white beard with a yellow tip
'Gerald Darby' is a rhizomatous perennial to 1.2m in height, with arching, narrow leaves and purplish stems bearing 3-4 violet-purple flowers, the falls whitish at the base with a yellow flash and dark veins
Choose from hundreds of plants, bulbs, seeds and gardening products from our online shop.
Save now on all plants
& bulbs from the RHS Plants Shop
We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.