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A hardy woodland perennial from a tuber, native to coastal Japan, grown for its unusual long hanging spadix thread. Give it shade, moist humus-rich soil and a dormant period, and let offsets from the tuber multiply the clump.
Arisaema thunbergii subsp. urashima is a herbaceous perennial plant. It is widespread through the woodlands of Japan, especially near the coast. The plant has a very curious inflorescence, and is popular in horticulture. As with all arisaemas, the inflorescence consists of a spathe tube enclosing a spadix appendix. In the case of A. thunbergi subsp. urashima, the spadix appendix is elongated into a free hanging thread of 45 to 60 cm. The underground tuber often produces offsets, which can be removed and grown on. The foliage dies down by summer, leaving the fruiting spike to ripen in autumn. The red berries contain high amounts of oxalic acid, and can cause painful irritation to the skin. All parts of the plant should be considered poisonous.
Florida Jack In The Pulpit · Amur Jack In The Pulpit · Arisaema attenuatum · Arisaema barnesii · Arisaema candidissimum · Arisaema ciliatum · Himalayan Cobra Lily · Arisaema decipiens · Green dragon · Arisaema erubescens · Arisaema fimbriatum · Yellow Cobra Lily
Text excerpted from the Wikipedia article Arisaema thunbergii subsp. urashima 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.
