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Species library › Discocactus › Discocactus petr-halfarii
Succulents Little published: much of this is inferred from related species

Discocactus petr-halfarii

A rarely recorded Discocactus from Bahia, Brazil, known mainly from its description and from cultivation. Treat it like other Bahian Discocactus: a flat, tropical cactus that wants strong light, warmth all year and a very mineral, sandy mix.

Discocactus petr-halfarii
Photo: PierreBraun, CC BY-SA 4.0, via Wikimedia Commons
At home, aim for
Day Warm-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

No habitat data exist for this name; Bahian Discocactus typically grow in quartz sand or gravel among rocks in campo rupestre and caatinga scrub, often half-buried with only the crown exposed.

Unknown for this species; Bahian Discocactus generally grow from a few hundred to about 1,000 m.

Brazil Northeast

🔒 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.