Mammillaria oteroi
A small cactus from the high Mixteca of Oaxaca, Mexico, found at 1800–2200 m. It expects bright sun, mild days with a large drop at night, summer rain, and a cool, dry winter.
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
Not documented in detail. It is assumed to grow on rocky slopes among grasses and low shrubs, which give partial shelter.
The records are from 1829–2195 m (median about 2130 m).
MexicoOaxaca
🔒 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
Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app.