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Species library › Acanthocalycium › Acanthocalycium thionanthum
Succulents Partly documented

Acanthocalycium thionanthum

A globular to short-cylindrical cactus from the dry Andean valleys of northwestern Argentina, known for yellow to red flowers. It thrives with strong sun, summer water and a cold, completely dry winter that sets up spring flowering.

Acanthocalycium thionanthum
Photo: Nicolas Olejnik, CC BY 4.0, via Wikimedia Commons
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

Rocky slopes and stony flats in dry montane scrub of the Calchaquí valleys and nearby ranges.

Mostly about 1,500–3,000 m; the few recorded elevations range from 2,079 to 2,835 m.

Argentina (Salta)Argentina (Tucumán)Argentina (Catamarca)

🔒 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

Grow Acanthocalycium thionanthum? Add it to a free garden and its full profile opens. Pro opens all 38,374 profiles in the library, plants and fungi.

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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 4.0 licence, unmodified.