Borzicactus icosagonus

A densely golden-spined, sprawling to semi-erect columnar cactus (often sold as Cleistocactus icosagonus) from the dry inter-Andean valleys and slopes of southern Ecuador and northern Peru, with orange-red tubular flowers. It likes bright light, mild temperatures with cool nights all year, and no frost.

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

Grows on rocky slopes and cliffs in dry montane scrub and seasonally dry valleys of the Andes, usually in the open among shrubs and grasses.

Recorded 725–3,200 m, median about 1,940 m; most records are from 1,800–2,500 m in Loja and Azuay.

EcuadorPeru

🔒 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.