Amorphophallus symonianus

A small tuberous Amorphophallus endemic to north-eastern Thailand, growing in humus-filled pockets on limestone in medium shade. It leafs out with the monsoon and dies back to a dormant tuber in the dry season, so a warm wet summer and a dry rest are the core of growing it.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light Dappled lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Humus-filled limestone pockets and soil on forested slopes, in medium shade.

No elevations recorded. NE Thai limestone hills are mostly 200–700 m, higher than the 68 m measured site.

Thailand

🔒 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.