Acanthocalycium rhodotrichum

A small globular to short-columnar cactus of the lowland Chaco and adjoining grasslands, better known in collections as Echinopsis rhodotricha, with large white night-opening flowers. It wants warm, bright summers with regular water and a cool, fairly dry winter.

At home, aim for

Day IntermediateTargets 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

Grows in lowland savanna, grassland and open dry woodland on sandy or stony soils, often partly shaded by grasses and shrubs.

A lowland plant, recorded from near sea level to about 180 m.

ParaguayArgentina NortheastBrazil West-CentralUruguayBolivia

🔒 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.