Gymnocalycium saglionis

The giant chin cactus, a large solitary globe of northwestern Argentina with heavy curved spines that turn red when wet. It grows on rocky ground among low shrubs from the lowlands to the high valleys, with summer rain and a cold, dry winter.

At home, aim for

Day Cool-growingTargets 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

Rocky soils among low vegetation in dry scrub, from about 240 to 2,600 m. Plants often sit in the partial shelter of shrubs and rocks.

Recorded at 240–2,600 m; measured climate sites span 608–2,070 m.

Argentina

🔒 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.