Coryphantha difficilis

A compact, densely spined Coryphantha of the Chihuahuan Desert hills of Coahuila, northeastern Mexico, at about 760–1720 m. It sees hot, moderately wet summers and dry, cool winters with cold nights, so grow it hard in full sun and keep it dry over 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

It grows on rocky, usually limestone hills and plains in Chihuahuan Desert scrub, either in the open or tucked among low shrubs and rocks. This is based on genus and regional knowledge.

Records run from 764 to 1721 m, with a median of 1483 m.

CoahuilaMexico Northeast

🔒 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 4.0 licence, unmodified.