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Herbaceous Perennial

Veratrum californicum

California false hellebore

An upright, rhizomatous perennial to 2.5m high, with broad, pleated bright green leaves that are hairy underneath. In summer, produces branching flower stems covered with small, star-shaped, green and creamy white flowers

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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
2–5 years
Ultimate spread
1.5–2.5 metres
Growing conditions
Clay
Loam
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer White Green Green
Autumn Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or South–facing or West–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Melanthiaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
TOXIC if eaten. Wear gloves and other protective equipment when handling TOXIC to pets if eaten (dogs) - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus

Veratrum are herbaceous, rhizomatous perennials with erect stems bearing alternate, pleated ovate or elliptic leaves and dense, branched panicles of small, star-shaped flowers in summer

Name status

Unresolved

Plant range
Western N America

How to grow

Cultivation

Grow in deep, fertile soil in partial shade; will tolerate full sun in a site where the soil does not dry out. Protect from cold, drying winds. Poisonous to livestock.

Propagation

Propagate by seed sown in pots in a cold frame as soon as seed is ripe, or by division of established clumps in early spring or autumn

Suggested planting locations and garden types
  • Architectural
  • Cottage and informal garden
  • Flower borders and beds
Pruning

Flower spike can be cut down after flowering, or left to develop seed heads for winter interest

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free

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