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Species library › Haageocereus › Haageocereus fascicularis
Succulents Partly documented

Haageocereus fascicularis

A clumping columnar cactus from the hyper-arid Andean foothills (precordillera) of Arica and Tarapacá in far northern Chile and adjacent Peru, with long central spines and scented white night flowers. It lives with almost no rain, cool nights and extreme sun, so overwatering and low light are the main risks in cultivation.

Haageocereus fascicularis
Photo: Adrien Jailloux, CC BY 4.0, via Wikimedia Commons
At home, aim for
Day Cool-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

Rocky desert slopes and ravines of the Atacama precordillera, growing fully exposed in sparse scrub.

Recorded at 610–2,996 m, median about 2,660 m.

ChilePeru

🔒 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.