Arisaema yamatense

A tuberous, summer-green Japanese cobra lily from shady hill forests of central and western Honshu. It dies down each autumn and needs a cold winter dormancy and a cool, moist, shaded summer.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

The floor of deciduous and mixed hill forest in central Japan. Like its relatives, it likely grows in moist humus in shade. Specific habitat accounts were not available.

Recorded at 35–1,200 m, median about 390 m.

HonshuKinkiChubu

🔒 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 4.0 licence, unmodified.