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Species library › Blechnum › Blechnum hieronymi
Ferns Partly documented

Blechnum hieronymi

A montane fern of New Guinea and nearby islands, mostly between 2,000 and 3,000 m. It needs constant cool temperatures, very high humidity and steady moisture, with no seasonal rest.

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

Where it grows wild

Not described in available sources. Records are from humid mountain forest and its edges, where Blechnum species grow on the forest floor and banks.

Recorded at 480–3,600 m, median 2,400 m.

Papua New GuineaWestern New GuineaSeramBismarck Archipelago

🔒 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.