Echinocereus santaritensis

A clumping hedgehog cactus with red-orange claret-cup-type flowers from the mountains of southeastern Arizona and neighbouring areas. It grows on sunny rocky slopes at about 1,600–2,000 m, so it wants strong sun, hot summers with monsoon rain, and a cold, dry winter that can include frost.

At home, aim for

Day IntermediateTargets 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

Rocky slopes and outcrops in grassland and oak–juniper woodland of the sky-island mountains, often among shrubs such as Vauquelinia and junipers.

Measured records sit at 1,623–2,073 m (median 1,889 m); Wikipedia gives above 1,070 m.

ArizonaNew MexicoSonoraChihuahua

🔒 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.