Cereus phatnospermus

A low, shrubby Cereus with creeping or ascending stems from the hot lowlands of the Chaco and Pantanal edge, in Paraguay, eastern Bolivia, western Brazil and northern Argentina. It handles great heat, wants a wet summer and a drier, cooler winter, and does well in a bright greenhouse.

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

Lowland dry forest and scrub of the Chaco and neighbouring savannas, usually on sandy or alluvial ground. The low stems often grow among shrubs and grasses, so they get strong light with some side shade.

Lowland plant: records span 100–450 m with a median of 105 m.

Brazil West-CentralParaguayBoliviaArgentina 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 3.0 licence, unmodified.