Narcissus 'Telamonius Plenus' (4) | daffodil 'Telamonius Plenus'

RHS

Other common names

Guernsey cabbage daffodil, Wilmer's great double daffodil, Wilmott's double daffodil

Synonyms

Narcissus 'Van Sion'

Bulbs

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A very old cultivar of double daffodil, to 35cm high, with grey-green leaves and double flowers, 10cm across, in early spring. The perianth segments are light greenish yellow and twisted, their margins are wavy or recurved and they are mixed together with the corona segments which are deeper yellow, sometimes green at the tips; the flower shape itself is variable, sometimes being fully double, sometimes only the trumpet being double, while the perianth segments remain single and distinct

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: South–facing or North–facing or East–facing or West–facing
Exposure: Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H6

Colour & Scent

Fragrance Flower

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Amaryllidaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Potentially harmful: Harmful if eatenskin irritant. Wear gloves and other protective equipment when handling. Pets (dogs, cats, tortoises): Harmful if eatenskin irritant. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Narcissus are bulbous herbaceous perennials with linear leaves and leafless stems bearing flowers, which may be solitary or in umbels, with 6 spreading perianth segments and a cup or trumpet-shaped corona
Name Status: Accepted
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea: Double daffodils may have one or more flowers per stem, with either perianth segments or corona, or both being doubled

How to Grow

Cultivation

Plant bulbs at one-and-a-half times their own depth in autumn, slightly deeper in light soils and in grass, in well-drained soil that is moist in the growing season in spring, in full sun or light dappled shade. See daffodil cultivation for further advice

Propagation

Propagate by division: separate and replant offsets as the leaves fade in early summer, or in early autumn before new roots are produced

Suggested planting locations and garden types

City and courtyard gardens
Patio and container plants
Coastal
Cottage and informal garden
Low Maintenance
Banks and slopes
Cut flowers
Flower borders and beds
Underplanting of roses and shrubs

Pruning

Deadhead as the flowers fade but allow the leaves to die down naturally

Pests

May be susceptible to slugs, narcissus bulb fly, narcissus eelworm, and bulb scale mite

Diseases

May be susceptible to narcissus basal rot, narcissus leaf scorch or daffodil viruses