Epithelantha spinosior

A tiny button cactus from the limestone hills around Monterrey in Nuevo León and nearby Coahuila, densely covered in fine white spines. Grow it in very bright light in a pure mineral mix, water in the warm summer rains, and keep it dry and cool through winter.

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 in the ground

Where it grows wild

The genus grows in open, sunny places, often among limestone chips and rock fragments, and the records fit the limestone ridges of the Sierra Madre Oriental foothills. Plants are small and partly hidden among stones.

Records carry no elevation; site coordinates suggest roughly 700–1,150 m.

MexicoNuevo LeónCoahuila

🔒 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 Epithelantha

Epithelantha bokei Epithelantha greggii Epithelantha pachyrhiza Epithelantha cryptica Epithelantha ilariae Epithelantha micromeris Epithelantha polycephala Epithelantha potosina Epithelantha pulchra

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.