Astrophytum coahuilense

A small, five-ribbed, white-flecked bishop's-cap cactus from limestone hills of south-western Coahuila and Durango. It wants hard sun, a mineral limestone gravel, a hot summer with occasional storms and a cool, bone-dry winter.

At home, aim for

Day IntermediateTargets 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 in the ground

Where it grows wild

Sunny south- and east-facing limestone slopes in xerophytic shrubland, growing between grey-white rocks in lime gravel and sand with almost no organic matter.

Measured records sit at 1125–1192 m (only 4 with elevation); the species occupies upland Chihuahuan Desert limestone hills.

CoahuilaDurango

🔒 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.