Mammillaria eriacantha

A clumping, cylindrical Mammillaria from the seasonally dry hills of central Veracruz, densely covered in fine golden-yellow spines. It comes from a summer-rain, mild-winter climate. Give it bright light and summer water, and keep it dry and cool in winter.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Most records lie near Xalapa in central Veracruz. Like its relatives there, it is likely to grow on rocky slopes and ledges among scrub and dry forest, where it is partly shaded by surrounding vegetation.

Recorded at 90–1443 m, median 751 m.

VeracruzGuatemalaHonduras

🔒 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 Public domain licence, unmodified.