Arisaema autumnale

A tuberous Taiwanese Arisaema, first described in 1996 as a subspecies of A. thunbergii and raised to species rank in 2025. As the name says, it flowers in autumn, unlike the spring-flowering Japanese A. thunbergii. Grow it as a shade-loving woodland tuber in rich, well-drained, humus-rich soil, and give it a dormant period once the foliage dies back.

At home, aim for

Day IntermediateTargets 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

Recorded only from Taiwan. Plants of the A. thunbergii group grow on the floor of moist broadleaf forest, often along shaded slopes and streams.

Not recorded in the data; probably a lowland to lower-montane forest plant, but this is unconfirmed.

Taiwan

🔒 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.