Amorphophallus johnsonii

A West African tuberous aroid of the Guinea and Sudan savanna belt, from Mali and Guinea to Ghana and Benin. It grows only through the hot summer rains and sits dormant as a bare tuber through the long, nearly rainless dry season, so the key to growing it is a warm wet summer and a warm dry winter rest.

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

Recorded from wooded savanna, gallery forest edges and scrub in the Guinea–Sudanian zone, typical of the many seasonal West African Amorphophallus that come up with the first rains. Details of its exact microhabitat are not well published; this is inferred from the range and genus.

Recorded at 100–684 m, median 365 m: lowland plains and low hills.

GhanaBeninMaliGuineaIvory CoastLiberiaBurkina

🔒 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.