Mammillaria magnimamma

Mexican pincushion, a large clumping Mammillaria with fat four-sided tubercles and woolly axils, widespread in central Mexico, mostly at about 2000 m. It is tough and easy: full sun, a dry cool winter and summer rains.

At home, aim for

Day Cool-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 in the ground

Where it grows wild

Grassland, scrub and rocky slopes of the central Mexican plateau, forming large clumps.

Records 367–2933 m, median 2013 m; literature gives 100–2700 m.

Mexico CentralMexico GulfMexico NortheastMexico Southwest

🔒 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 3.0 licence, unmodified.