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Species library › Mammillaria › Mammillaria longimamma
Succulents Well documented

Mammillaria longimamma

A soft, clustering Mammillaria with long finger-like tubercles and large yellow flowers, from the highlands of Hidalgo and Querétaro in central Mexico. It has thick roots and rots easily, so it needs a very mineral mix and a dry, cool winter.

Mammillaria longimamma
Photo: Succu, CC BY 3.0, via Wikimedia Commons
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

Grows in highland scrub and grassland on slopes, often partly under shrubs or among grasses.

Records at 1030–2375 m, median about 1730 m.

HidalgoQuerétaroSan Luis PotosíGuanajuato

🔒 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.