Gymnocalycium erinaceum

A small, densely spined Gymnocalycium from the hills of Córdoba province in central Argentina, known from very few wild records. It lives through hot wet summers and a cool, almost rainless winter, so give it strong light, summer water and a dry, cool winter rest.

At home, aim for

Day IntermediateTargets in Plantistry

Night A clear drop at nightTargets 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

Small globular cactus of rocky grassland and granite outcrops in the Córdoba hills, often partly sheltered by grasses and stones; inferred from the genus and the locality.

Few records carry an elevation; the single climate site is at 856 m.

Argentina (Córdoba)

🔒 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 4.0 licence, unmodified.