Species library › Streptocarpus › Streptocarpus johannis
Other Partly documented

Streptocarpus johannis

A rosette-forming Cape primrose from the forest margins and shaded rock faces of the Eastern Cape and southern KwaZulu-Natal, with many strap-shaped leaves and small blue-violet flowers. It grows in a summer-rain climate with cool, drier winters, so it wants bright shade, steady moisture in summer and a cooler, slightly drier rest.

At home, aim for
Day Cool-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Ordinary room humidityBand in Plantistry
Light Dappled lightDLI and PPFD in Plantistry
Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Recorded mostly around the Eastern Cape and KwaZulu-Natal border, where rosulate Streptocarpus typically grow on shaded banks, rock outcrops and forest edges with leaf litter, often in seasonally misty gorges.

Most records sit around 1,200 to 1,600 m on the escarpment, with a few near the coast; few records carry their own elevation.

Cape ProvincesKwaZulu-Natal

🔒 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.