Species library › Blechnum › Blechnum palmiforme
Ferns Well documented

Blechnum palmiforme

A small tree-like fern from Tristan da Cunha and Gough Island in the cold South Atlantic, forming a short black trunk topped by stiff, leathery fronds. Its needs are cool, windy, constantly moist and ocean-humid conditions.

At home, aim for
Day Cool-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Humid airBand in Plantistry
Light Bright, filtered lightDLI and PPFD in Plantistry
No rest periodGrows in the ground

Where it grows wild

Grows in wet, peaty fern bush and heath on windswept slopes and gullies, often in dense stands.

Records lie from 25 to 650 m, median 200 m.

Tristan da CunhaGough Island

🔒 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.