Mammillaria multihamata
A critically endangered hooked-spined Mammillaria from central-northeastern Mexico, growing on steep volcanic rocky slopes in submontane semi-desert scrub. Give it strong light, a summer-wet and winter-dry rhythm, and a very mineral mix.
Where it grows wild
Submontane semi-desert shrubland on steep volcanic rocky slopes, where it grows among rocks and shrubs.
Literature gives about 1,200 m; the one measured site sits at about 2,300 m, so it is cooler than the literature suggests.
π Growing it like that
The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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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.