Euphorbia crassa

A little-documented succulent Euphorbia of the south-central Madagascar highlands around 800–1250 m. Grow it like other highland Malagasy succulent spurges: bright light, warm wet summers and a cool, dry winter.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Little is published on its habitat; the sites suggest rocky ground, grassland and open woodland of the southern highlands, typical of succulent Malagasy Euphorbia.

Recorded at 800–1200 m, median 1010 m; one climate site near 190 m in the far south.

Madagascar

🔒 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.