Alphabetical Plant Listing

Arisaema sikokianum (Japanese Cobra Lily)

Japanese Cobra Lily


One of the earliest cobra lilies, Arisaema sikokianum (Japanese Cobra Lily) is a tuberous perennial boasting in early spring a large, purple-black spathe, up to 8 in. long (20 cm), surrounding an elegant white club-like spadix protruding from the mouth. The dramatic flowers are perched above the foliage of bright green, divided leaves, sometimes beautifully splashed with silver. The blossoms are followed by a dense cone of striking red berries in mid to late summer. A welcome addition to the shade garden, Japanese Cobra Lily is easy to grow and requires very little care. Roots contain calcium oxalate and are poisonous.

  • Grows up to 12-20 in. tall (30-50 cm) and 12-18 in. wide (30-45 cm).
  • Easily grown in humus-rich, moist but well-drained soils in partial shade. Tubers must not dry out when dormant, and may need winter protection in colder areas.
  • Best left undisturbed in the shady woodland garden, cottage garden or underplanting roses and shrubs. Plant in groups of a dozen or more.
  • Virtually disease free. Keep an eye out for slugs and vine weevil.
  • Propagate by seed, sowing them in containers in a cold frame in autumn or spring, or remove offsets in late summer.
  • Native to Japan.
  • Ingestion may cause severe discomfort

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Requirements

Hardiness 4 – 9
Heat Zones 3 – 9
Climate Zones 3, 3A, 3B, 4, 5, 6, 14, 15, 16, 17
Plant Type Bulbs, Perennials
Plant Family Arisaema - Jack in the Pulpit
Exposure Partial Sun
Season of Interest Spring (Late)
Summer (Early,Mid,Late)
Fall
Height 1' – 2' (30cm – 60cm)
Spread 1' – 2' (30cm – 60cm)
Water Needs Average
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Attracts Birds
Garden Uses Beds and Borders, Underplanting Roses and Shrubs
Garden Styles Informal and Cottage, Prairie and Meadow

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While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 4 – 9
Heat Zones 3 – 9
Climate Zones 3, 3A, 3B, 4, 5, 6, 14, 15, 16, 17
Plant Type Bulbs, Perennials
Plant Family Arisaema - Jack in the Pulpit
Exposure Partial Sun
Season of Interest Spring (Late)
Summer (Early,Mid,Late)
Fall
Height 1' – 2' (30cm – 60cm)
Spread 1' – 2' (30cm – 60cm)
Water Needs Average
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Attracts Birds
Garden Uses Beds and Borders, Underplanting Roses and Shrubs
Garden Styles Informal and Cottage, Prairie and Meadow

Great Plant Combination Ideas with Arisaema - Jack in the Pulpit

Guides with Arisaema - Jack in the Pulpit

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