Parodia haselbergii

A small globular cactus from the southern Brazilian highlands, densely covered in fine white spines and flowering red to orange in late winter and spring. It lives on rock outcrops and cliff faces in a humid, frost-touched subtropical climate, so it wants bright light, cool winters and a free-draining mix rather than desert treatment.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Grows in crevices and on ledges of rock outcrops and cliffs within highland grassland and forest edge in Rio Grande do Sul and Santa Catarina, often among mosses and lichens where water drains away quickly.

Recorded at 726–1450 m (median 826 m), on the Serra Geral plateau and its escarpments.

Brazil South

🔒 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 3.0 licence, unmodified.