Helleborus × nigercors 'Emma'

RHS Plant Profile

hellebore 'Emma'

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Herbaceous Perennial

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A clump-forming perennial to around 35cm in height, with dark green leaves with lighter veining. Masses of cream flowers with a pink blush, becoming more pink as they mature, appear in late winter and early spring

Position

Partial shade

Soil Types

Chalk, Clay, Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 1–2 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Clay Loam

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

Position

Partial shade

Aspect: East–facing or West–facing
Exposure: 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

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Ranunculaceae
Native to GB/Ireland: No
Foliage: Semi evergreen
Habit: Clump forming
Potentially harmful: Harmful if eaten; skin irritant. Wear gloves and other protective equipment when handling. Pets: Harmful if eaten; skin irritant. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Helleborus can be rhizomatous, herbaceous or semi-evergreen perennials forming a clump of pedate basal leaves, or evergreen with erect, leafy stems. Large, bowl-shaped flowers are borne in loose clusters in late winter or spring
Name Status: Accepted

How to Grow

Cultivation

Thrives in neutral to alkaline soils that are moist, fertile and humus-rich, in dappled shade. Provide shelter from strong, cold winds. mulch annually in autumn. See hellebore cultivation

Propagation

Propagate by division of large clumps, after flowering in early spring, or in early autumn. As this plant is protected by Plant Breeders' Rights, any propagation should be for personal rather than commercial use.

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Flower borders and beds
Ground cover
Underplanting of roses and shrubs

Pruning

Remove faded or damaged foliage as the flowers appear

Pests

May be susceptible to hellebore aphid, slugs, snails and vine weevil

Diseases

May be susceptible to hellebore leaf spot, and virus diseases including hellebore black death