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Species library › Encephalartos › Encephalartos horridus
Other Well documented

Encephalartos horridus

The Eastern Cape blue cycad: a compact, intensely blue-grey cycad with savagely spined leaves from the Port Elizabeth and Uitenhage districts. It wants full sun, sharp drainage and modest water, and handles light frost.

Encephalartos horridus
Photo: CC BY-SA 3.0, 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
No rest periodGrows in the ground

Where it grows wild

Karoo scrub, sourveld and open rocky ridges, on shallow to deep soils, in full sun.

Lowland to low hills; few records carry an elevation.

South AfricaEastern Cape

🔒 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.