Water
Keep soil consistently moist during the growing season, but not waterlogged. Reduce watering significantly as the plant enters dormancy in late summer or fall. Overwatering can lead to root rot, so ensure good drainage.
Also known as Ringen’s Jack-In-The-Pulpit
Safety note: This plant may be toxic to humans and pets. See toxicity details.
Arisaema ringens, the Japanese cobra lily, is a striking woodland perennial with hooded, cobra-like spathes in green and purple, blooming in spring.
At-a-glance light, water, soil, and growing conditions from plant data
Partial Shade
50% intensity
Bright, indirect light is ideal; avoid direct sun.
Moderate
50% intensity
Keep soil consistently moist during growth, reduce in dormancy.
Humus-rich, well-drained
50% intensity
Moderate
50% intensity
Prefers temperatures between 15-25°C during growth; cooler in winter.
Outdoor
50% intensity
Low
25% intensity
Light feeding in spring with a balanced fertilizer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | Yes 3/5 intensity |
| Toxic for pets | Yes 4/5 intensity |
| Edible | No |
Toxic if ingested
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep soil consistently moist during the growing season, but not waterlogged. Reduce watering significantly as the plant enters dormancy in late summer or fall. Overwatering can lead to root rot, so ensure good drainage.
Remove spent flower stalks and yellowing leaves as they appear to maintain a tidy appearance and prevent disease. Cut back all foliage to the ground in late autumn after it has died back completely.
The easiest method is by division of tubers during the dormant season. Seeds can be sown in autumn or spring, but germination can be slow and erratic. Allow seeds to dry slightly before sowing.
Repot every 2-3 years in spring as new growth emerges. Use a well-draining potting mix, such as a blend of loam, peat moss, and perlite. Ensure the tuber is planted with the "eye" facing upwards.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Japanese Cobra Lily (Arisaema ringens)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Liliopsida |
| Order | Alismatales |
| Family | Araceae |
| Genus | Arisaema |
| Species | Arisaema ringens |
Similar in genus Arisaema
Answers based on plant encyclopedia data
