Blechnum inflexum

A tufted hard fern of the high grasslands and rocky streamsides of the Drakensberg and neighbouring southern African mountains. It is a cool-temperate plant that sees frosty, dry winters and warm, wet summers, so it suits a cool greenhouse or sheltered garden far better than a warm terrarium.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Montane grassland, rock outcrops and stream banks, where it grows among rocks and tussocks rather than under closed forest; based on the recorded sites and the habits of related southern African Blechnum.

Recorded sites lie at about 1,300 to 2,200 m, most of the weight near 2,200 m in the Drakensberg.

South AfricaLesothoEswatiniZimbabwe

🔒 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.