Mammillaria bocasana

The powder-puff cactus: a clumping, white-haired Mammillaria from the high semi-desert of north-central Mexico. It is easy and fairly cold-hardy if kept dry in winter, but it rots quickly in wet, cold soil.

At home, aim for

Day Cool-growingTargets in Plantistry

Night A clear drop at nightTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Canyon walls and volcanic rock in high semi-desert, often in the shelter of shrubs, where it forms broad mounds of offsets.

High plateau: records lie at 1755 to 2744 m (median 2037 m). The literature gives 1650 to 2300 m.

San Luis PotosíZacatecasQuerétaroHidalgo

🔒 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.