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Species library › Blechnum › Blechnum geniculatum
Ferns Partly documented

Blechnum geniculatum

A small fern endemic to the cloud-forest summits of Lord Howe Island, now often placed as Cranfillia geniculata. It wants cool, constantly moist, misty, shaded conditions with very little seasonal change.

At home, aim for
Day IntermediateTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Very humid airBand in Plantistry
Light ShadeDLI and PPFD in Plantistry
No rest periodGrows in the ground

Where it grows wild

Grows on moist, shaded banks in cloud forest on the summits of Mount Gower and Mount Lidgbird, where it is rare; a terrestrial or rock-dwelling fern with a creeping rhizome.

Summit cloud forest; the main climate site sits at about 830 m, adjusted from a sea-level grid cell.

Lord Howe 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.