Mammillaria mathildae

A small, endangered clustering Mammillaria endemic to the area around Querétaro city in central Mexico, at about 1,900–2,000 m. It wants strong light, a mineral mix, summer water and a dry winter with cool nights.

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

Rocky volcanic slopes in xeric scrub of the high plateau, often wedged among rocks and low shrubs; partly inferred from the genus.

The Querétaro site is at about 1,985 m.

MexicoQuerétaro

🔒 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.