Euphorbia decaryi

A dwarf, rhizomatous Euphorbia from the far south-east of Madagascar, with rosettes of crinkled leaves. It comes from warm, humid lowland near the coast and has no hard dry season, so it wants more water and less sun than most succulent Euphorbias.

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 in the ground

Where it grows wild

Little is published on its habitat. Nearly all records are from the Taolagnaro area at low elevation, where small Euphorbias of this kind grow in sandy or stony ground among shrubs and in open dry forest.

Recorded at 10–350 m, median 14 m; one record at about 1200 m in the central highlands is an outlier.

MadagascarAnosy

🔒 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 Public domain licence, unmodified.