Astrophytum myriostigma

The bishop's cap cactus, a spineless, usually five-ribbed globe covered in white flecks, from the limestone hills of the Chihuahuan Desert in northeastern Mexico. It wants strong sun, a gritty mineral mix, summer water and a cool, completely 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

Rocky limestone slopes and flats in Chihuahuan Desert scrub, usually among grasses, rocks and low shrubs that give young plants a little shade.

Recorded from about 330 to 2,460 m, median about 1,350 m.

San Luis PotosíTamaulipasNuevo LeónCoahuilaDurangoMexico 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 3.0 licence, unmodified.