Melocactus azureus

A blue-bodied Turk's cap cactus from limestone outcrops in the caatinga of Bahia, Brazil. It needs constant warmth, bright light and a fast-draining mineral mix, and it sulks in cold, wet conditions.

At home, aim for

Day Warm-growingTargets in Plantistry

Night A clear drop at nightTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Grows in crevices and pockets of low limestone outcrops surrounded by dry caatinga woodland.

About 450 to 800 m. The recorded median of 645 m fits this range.

Brazil Northeast

🔒 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 4.0 licence, unmodified.