Echinocereus coccineus

The scarlet hedgehog cactus, a clumping cactus of rocky slopes from Colorado and New Mexico to west Texas and north-eastern Mexico, with bright red, hummingbird-pollinated flowers. It is very cold-hardy when dry and needs full sun and a cold, dry winter to flower well.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Rocky slopes, ledges and outcrops in desert grassland, pinyon-juniper woodland and open montane forest edges.

Recorded at 425–2667 m, median 1823 m.

New MexicoTexasColoradoMexico 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.