Blechnum gibbum

A trunk-forming fern from New Caledonia and Vanuatu, now usually placed in Oceaniopteris as O. gibba. It builds a short upright rhizome up to 1–2 m tall topped by a crown of bright green fronds.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light Dappled lightDLI and PPFD in Plantistry

No rest periodGrows in the ground

Where it grows wild

Lowland to submontane forest margins and partly shaded slopes on acidic soils. The measured conditions are humid all year with a warmer wet season.

Recorded from 50 to 1,060 m, median about 400 m.

New CaledoniaVanuatu

🔒 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.