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Species library › Blechnum › Blechnum australe
Ferns Partly documented

Blechnum australe

A colony-forming terrestrial fern of southern and eastern Africa and the western Indian Ocean islands, mostly at cool montane elevations around 2,000 m. Grow it cool and evenly moist in bright shade.

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
No rest periodGrows in the ground

Where it grows wild

Forest margins, scrub, moist grassland, stream banks and rocky slopes, often spreading by rhizomes into patches; very common in Réunion's high heath and the Cape mountains.

Recorded 250–2,944 m, median 1,995 m.

South AfricaRéunionLesothoMadagascarTanzaniaKenyaZimbabweNamibiaTristan da CunhaAscension

🔒 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.