Epithelantha micromeris

A tiny, button-like cactus densely covered in white spines, native to Chihuahuan Desert limestone from west Texas and New Mexico into Coahuila and Nuevo León. It needs strong sun, a very fast-draining limestone mix, summer water and a dry, cool winter rest; overwatering is the usual cause of loss.

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

Grows on limestone hills, ledges and gravelly slopes in Chihuahuan desert scrub, often wedged in rock cracks or among stones. Plants sit fully exposed or with slight shelter from nearby rocks and shrubs.

Recorded at 641–2096 m, median about 1250 m.

USA (E-Arizona, New Mexico, W-Texas)Mexico (Coahuila, Nuevo León)

🔒 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 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-SA 4.0 licence, unmodified.