Euphorbia caput-aureum

A small succulent Euphorbia endemic to Madagascar, recorded among rocks in the dry north near Antsiranana. Very little is published; grow it like other dwarf Malagasy Euphorbia: bright light, warmth, a mineral mix and a dry season.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Rocky areas, apparently in the seasonally dry north of Madagascar; details beyond that are not published.

Only one record, near sea level; elevation is not documented.

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. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.