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Species library › Pygmaeocereus › Pygmaeocereus densiaculeatus
Succulents Little published: much of this is inferred from related species

Pygmaeocereus densiaculeatus

A dwarf, densely spined cactus with a tuberous root from the fog-fed coastal desert of central Peru. It grows in near-rainless conditions, relying on winter fog, so it needs strong light, mild temperatures, very careful watering and a mostly mineral mix.

Pygmaeocereus densiaculeatus
Photo: Luis Enrique Alomía Collazos, CC BY 4.0, via Wikimedia Commons
At home, aim for
Day IntermediateTargets 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

Grows in sandy and stony ground in the coastal desert and lomas (fog-oasis hills), where moisture comes mainly from the winter garúa fog rather than rain.

The single record sits at about 255 m in the coastal hills.

Peru

🔒 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 4.0 licence, unmodified.