Arisaema costatum

A Himalayan cobra lily from the forests of Nepal and southern Tibet, notable for its large, ribbed, dark-striped spathe and its trifoliate leaves. It grows through the warm monsoon summer and goes dormant as a tuber over the cold, dry winter, when nights fall below freezing.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Dappled lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

It grows in the shade of temperate montane forest and forest edges in the Himalaya, in rich, moist humus. The habitat description follows the genus and the recorded sites.

Only 3 records carry an elevation (1,928 m). The climate sites sit at about 1,900–2,500 m, and one at 4,078 m.

NepalTibetEast HimalayaWest Himalaya

🔒 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.