Echinocereus milleri

A small Chihuahuan Desert hedgehog cactus of the E. viridiflorus group; GBIF treats the name under E. viridiflorus subsp. chloranthus. It grows in full sun on rocky limestone hills, with hot summers, cold dry winters and summer monsoon rain. Grow it very bright and dry, with a cold, dry winter rest.

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 in the ground

Where it grows wild

Inferred from the E. viridiflorus group: rocky slopes and grassland on limestone or igneous soils in the Chihuahuan Desert, in full sun among grasses and shrubs.

No elevation data; the group grows at roughly 1000–1800 m.

TexasNew MexicoColoradoChihuahuaCoahuila

🔒 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.