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Japanese Jack In The Pulpit

Arisaema sikokianum

Japanese Jack In The Pulpit
Photo: Photo by and (c)2007 Derek Ramsey (Ram-Man), GFDL 1.2

A tuberous perennial woodland plant from Japan, known for its purple-striped hood and white cup. It grows best in cool, moist, shaded spots, where it returns each spring from a tuber.

Family
Araceae (Arum family)
Grows as
Perennial
Light
Part shade, Shade
Water
Keep the soil evenly moist during growth and let it dry a little while dormant.
Soil
Humus-rich, well-drained woodland soil or leaf mould.
Temperature
Cool to mild conditions; hardy in temperate climates, protect from prolonged heat.
How easy
Moderate
Safety
Mildly toxic: Contains calcium oxalate crystals that may cause contact irritation of the skin and mouth; the Wikipedia source describes it as of little toxicologic importance.
Native range
Japan (S. Honshu, Shikoku)
Climate
temperate

About

Arisaema sikokianum, the Japanese Jack-in-the-pulpit, is a herbaceous perennial plant. An unusual woodland plant noted for its unmistakable smoky-purple base, snow-white cup and large hood with purple, green and white stripes. Found only in moist, shaded areas on the Island of Shikoku in Japan, it is closely related to Arisaema triphyllum, which is common to the eastern United States. In home gardens, it is a springtime planting and is often placed with shade-loving hostas and bleeding hearts.

The plant is known to have existed and been admired in eighteenth century Japan. It may also cause contact irritation but is of little toxicologic importance.

Other Arisaema plants

Arisaema candidissimum · Himalayan Cobra Lily · Yellow Cobra Lily · Cobra lily · Jack in the pulpit · Jack in the pulpit

Text excerpted from the Wikipedia article Arisaema sikokianum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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