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Arisaema candidissimum

white-spathed jack in the pulpit

A tuberous perennial to 30cm in height, with leaves composed of three ovate leaflets, appearing after the flowers. White, hooded spathes, striped pale pink, with a greenish tube are 10cm in length and appear in summer

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
5–10 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring
Summer Green Pink White Green
Autumn Red
Winter
Position
  • Full sun
  • Partial shade
Aspect

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

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Araceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Potentially harmful
Humans/Pets: Harmful if eaten, skin/eye irritant. Wear gloves and other protective equipment when handling For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
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
W China

How to grow

Cultivation

Grow in moist but well-drained humus-rich soil in a cool site. In colder regions may need winter protection and tubers must not dry out when dormant

Propagation

Propagate by seed, sowing them in containers in a cold frame in autumn or spring. Offsets may be removed in late summer

Suggested planting locations and garden types
  • Cottage and informal garden
  • Flower borders and beds
  • Underplanting of roses and shrubs
Pruning

No pruning required

Pests

May be susceptible to slugs and vine weevil

Diseases

Generally disease-free

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