Arisaema jacquemontii

A hardy high-altitude Himalayan cobra lily from rocky slopes and forest margins at 2,400–4,000 m. It grows in the cool, wet monsoon summer and spends a cold, dry winter dormant as a tuber, so it suits a cool-temperate garden far better than a warm house.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Rocky slopes, alpine meadows and forest at 2,400–4,000 m across the Himalaya; flowers in June and July with the monsoon.

Literature gives 2,400–4,000 m; records span 335–4,519 m with a median of 3,810 m.

NepalChina (Tibet, Yunnan, Sichuan)IndiaPakistanBhutanAfghanistanMyanmarBangladesh

🔒 Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

✓ Day and night temperature targets, and the limits it tolerates

✓ Humidity band, and how to hold it

✓ Light as DLI and PPFD for a grow light

✓ Wet and dry seasons, and whether to rest it

✓ Substrate and airflow

✓ A step-by-step setup to grow it like the wild

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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 2.0 licence, unmodified.