Pelecyphora robbinsiorum

The Cochise pincushion, a tiny, rare globular cactus (formerly Escobaria or Cochiseia robbinsiorum) of limestone hills in semi-desert grassland on the Arizona–Sonora border. It wants bright light, a frosty dry winter, summer monsoon water and a lean limestone mix.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Shallow, rocky limestone soils in semi-desert grassland, often half-hidden among grasses and low shrubs that give light shade.

Known from roughly 1,200–1,500 m in Cochise County, Arizona, and adjacent Sonora; the data file has no wild record elevations.

Arizona (USA)Sonora (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.