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Species library › Blechnum › Blechnum decrescens
Ferns Partly documented

Blechnum decrescens

A Madagascan montane rainforest fern, now placed in Lomariocycas as L. decrescens, a group of stout, often short-trunked hard ferns. Grow it cool-humid and shaded with year-round moisture.

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

Shaded floor and streamsides of mid-elevation humid evergreen forest in eastern Madagascar, inferred from records and the genus.

Recorded from 956 to 1,260 m, median 1,200 m.

Madagascar

🔒 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.