Sclerocactus papyracanthus

The grama-grass cactus: a tiny high-desert cactus with flat, papery spines that mimic the dry grass it hides among in New Mexico, Arizona and west Texas. It needs strong light, a cold dry winter and very careful watering; many growers keep it grafted.

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

Grows in open grama grassland and pinyon-juniper flats on gravelly or sandy soils, partly shaded by grass tufts.

Measured sites lie at roughly 1,200–2,200 m.

New MexicoArizonaWest TexasNorthern Mexico

🔒 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-SA 3.0 licence, unmodified.