Mammillaria xaltianguensis

A Mammillaria from the hot lowlands of Guerrero, Mexico, near Xaltianguis north of Acapulco. Unlike desert Mammillaria it needs warm winters, a wet summer and a long, warm dry season.

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 in the ground

Where it grows wild

The single record lies in the Pacific slope hills of Guerrero in tropical deciduous forest. It grows on rocky slopes, likely with some shade from shrubs in the dry season; this is inferred from related species.

The record is placed at about 86 m, but the surrounding grid cell averages about 620 m; the true elevation is uncertain.

Guerrero

🔒 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 CC BY-SA 3.0 licence, unmodified.