Epithelantha pachyrhiza

A tiny white-spined button cactus with a thick taproot, from the Coahuila and Nuevo León border region of northeastern Mexico. Like the rest of its genus it grows in open limestone ground, so it needs strong light, a very mineral mix and a dry, cool 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

Like others in the genus, it grows in open ground among limestone chips and gravel, often partly sunk in the soil with sparse grasses and shrubs nearby. Habitat detail comes from the genus.

Few records carry an elevation. The climate sites sit at roughly 700–1,850 m.

Mexico Northeast

🔒 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 cryptica Epithelantha ilariae Epithelantha micromeris Epithelantha polycephala Epithelantha potosina Epithelantha pulchra Epithelantha spinosior

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 4.0 licence, unmodified.