Mammillaria mercadensis

A small, often clustering Mammillaria with hooked central spines, from the volcanic highlands of western and northern Mexico at around 1800 to 2400 m. It wants full sun, a cold dry winter and summer rain, much like other highland pincushions.

At home, aim for

Day Cool-growingTargets in Plantistry

Night A clear drop at nightTargets 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

Grows among volcanic rocks in dry shrubland, grassland and open oak or pine woodland edges in semi-arid highlands.

Recorded from 700 to 2738 m, median 2059 m; most populations sit between 1800 and 2400 m.

DurangoZacatecasJaliscoNayaritSinaloaAguascalientesMichoacánSan Luis Potosí

🔒 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 Mammillaria

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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.