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Arisaema concinnum

A tuberous perennial 1.5m tall, with stolons and a solitary leaf divided into 7-13 pointed leaflets. In early summer it produces a dark purple or green spathe, hooded like a cobra, with white stripes and a thin tail to 15cm long. This is followed in autumn by a spike of densely packed red berries

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Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Purple Green White Green
Autumn Red
Winter
Position
  • Partial shade
Aspect

East–facing or North–facing or West–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Araceae
Native to the UK
No
Foliage
Deciduous
Habit
Columnar upright
Potentially harmful
Harmful if eaten, skin and eye irritant. Wear gloves and other protective equipment when handling
Genus

Arisaema are mostly tuberous perennials usually with palmately lobed leaves, and distinctive tubular, hooded spathes within which the tiny true flowers are clustered at the base of the club-like or filamentous spadix, followed by a spike of red berries

Name status

Correct

Plant range
Tibet

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How to grow

Cultivation

Plant the tubers 20cm deep in winter or spring, into moist but well-drained, humus-rich soil in a cool, partially shaded site. Mulch annually in early spring. Outdoors this species requires winter protection, or it can also be grown in deep pots in a cold greenhouse

Propagation

Propagate by sowing seed in containers in a cold frame in spring or autumn, or by removing offsets in late summer

Suggested planting locations and garden types
  • Architectural
  • City and courtyard gardens
  • Cottage and informal garden
  • Conservatory and greenhouse
  • Flower borders and beds
Pruning

No pruning required

Pests

May be susceptible to slugs and vine weevil

Diseases

Generally disease-free

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