Melocactus violaceus

A small Turk's cap cactus of the Brazilian coast, growing in white sand of restinga dunes and coastal scrub from Rio Grande do Norte to Rio de Janeiro. It needs full sun, constant warmth and a pure, fast-draining sandy mix.

At home, aim for

Day Warm-growingTargets 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

Open sandy restinga, dune scrub and sandy patches among low coastal vegetation, often fully exposed. Notes are based on the measured sites and the genus; species-specific cultivation data are thin.

Mostly within a few tens of metres of sea level (median 27 m); a few inland records reach about 1,100 m.

Brazil NortheastBrazil Southeast

🔒 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 4.0 licence, unmodified.