Mammillaria peninsularis

A small, flat-topped Mammillaria from the Cape region of Baja California Sur, growing low in coastal desert scrub with a thick taproot. It needs very bright light, a hot summer with some late rain and a dry, mild winter, and it rots easily if overwatered.

At home, aim for

Day IntermediateTargets 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

Sandy and stony flats and low slopes in coastal desert scrub; habitat detail is generalised from the genus and region.

Records from 10–389 m, median 50 m.

Baja California SurMexico

🔒 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.