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Herbaceous Perennial

Helleborus × hybridus Hillier hybrids slate
  • RHS Plants for pollinators

hellebore hybrids slate

A semi-evergreen, clump-forming perennial with divided, leathery, mid-green foliage and branched stems bearing cup-shaped, single grey-slate flowers with purple-pink margins in late winter and early spring

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Moisture
Moist but well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Grey Silver Green
Summer Green
Autumn Green
Winter Grey Silver Green
Position
  • Partial shade
Aspect

East–facing or North–facing or South–facing or West–facing

Exposure
Sheltered
Hardiness
H7
Botanical details
Family
Ranunculaceae
Native to the UK
No
Foliage
Evergreen or Semi evergreen
Habit
Clump forming
Potentially harmful
Harmful if eaten, skin irritant. Wear gloves and other protective equipment when handling
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

Correct

How to grow

Cultivation

Prefers a humus-rich, fertile, and moisture-retentive soil in partial shade but will tolerate full sun. Protect from strong, cold winds and mulch with a layer of well-rotted organic matter in autumn. See hellebore cultivation for further information

Propagation

Propagate by seed or by division in autumn

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Wildlife gardens
  • Flower borders and beds
  • Underplanting of roses and shrubs
  • Cut flowers
Pruning

Cut back to the ground brown or dead foliage in late winter when flower buds start to develop

Pests

May be susceptible to hellebore aphid, hellebore leaf miner and snails

Diseases

May be susceptible to hellebore leaf spot and hellebore black death

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