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Species library › Harrisia › Harrisia caymanensis
Succulents Well documented

Harrisia caymanensis

A slender, shrubby night-blooming cactus restricted to the Cayman and Swan Islands, where it grows in coastal scrub on exposed limestone. It wants heat, strong light, mineral alkaline footing and a drier winter, and it is not frost-hardy.

Harrisia caymanensis
Photo: Tia Tyler, CC0, via Wikimedia Commons
At home, aim for
Day Warm-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Ordinary room humidityBand in Plantistry
Light Full sunDLI and PPFD in Plantistry
Expects a seasonal restGrows in the ground

Where it grows wild

Coastal scrub and scrubby woodland on exposed limestone rock. The stems sprawl through and lean on surrounding shrubs.

About 5–50 m above sea level.

Cayman IslandsSwan Islands (Honduras)

🔒 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 CC0 licence, unmodified.