Echinocereus nicholii

Nichol's hedgehog cactus, a clumping cactus of the Sonoran Desert with stems 30–60 cm tall, glassy white to golden spines and pink-red flowers. It grows among saguaros on limestone and basalt slopes and wants full sun, heat and a cool, dry winter.

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

Xeric desert scrub on limestone and basaltic soils, alongside saguaro, barrel cacti and chollas.

Recorded at 5–1067 m (median 600 m); literature gives 300–900 m.

ArizonaSonora

🔒 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.