Melocactus glaucescens

A threatened Turk's-cap cactus with a striking blue-grey body, confined to rocky sandstone and quartzite outcrops in central Bahia, Brazil. It needs heat all year, full sun and a gritty mix, and should never be kept cold and wet.

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 on rock (lithophyte)

Where it grows wild

Grows among rocks and in sandy pockets on open outcrops in caatinga and campo rupestre vegetation, fully exposed to the sun. Built from the measured sites and general knowledge of Bahian Melocactus.

Most records lie between about 700 and 1,050 m.

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.