Mammillaria guerreronis

A clustering Mexican Mammillaria with slender, densely white-spined cylindrical stems that sprawl or hang on rocky slopes. The name points to Guerrero in south-western Mexico, but the checklist entry and the single climate site here are in north-eastern Mexico, so the climate below is only a rough guide: hot summers, cool dry winters, strong sun.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

A rock-dwelling cactus of dry, sunny slopes and cliffs, forming clumps of elongated stems; generalised from the genus and the species' known form.

No usable elevation records; the measured site is a single grid point.

Mexico

🔒 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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More Mammillaria

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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.