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Species library › Blechnum › Blechnum pacificum
Ferns Little published: much of this is inferred from related species

Blechnum pacificum

A terrestrial fern of the eastern Pacific islands, mainly French Polynesia and the Cook Islands, growing in humid montane forest. Little is published about it; grow it as a warm, constantly moist, shade-loving Blechnum.

Blechnum pacificum
Photo: David H. Lorence, Warren L. Wagner, Kenneth R. Wood, Alan R. Smith, CC BY 4.0, via Wikimedia Commons
At home, aim for
Day IntermediateTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Humid airBand in Plantistry
Light ShadeDLI and PPFD in Plantistry
No rest periodGrows in the ground

Where it grows wild

Recorded mostly from montane forest on high volcanic islands, where cloud and steady trade-wind rain keep the forest floor moist. Inferred from the record elevations and the genus.

Recorded from 5 to 1400 m, median 916 m.

French Polynesia (Society, Marquesas, Austral Is.)Cook Islands

🔒 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. Photo from Wikimedia Commons, used under its CC BY 4.0 licence, unmodified.