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Species library › Blechnum › Blechnum digenum
Ferns Partly documented

Blechnum digenum

A little-known Blechnum name with only six records, all from northern New Zealand (Northland and Auckland). Growers should treat it like the other lowland New Zealand hard ferns: cool to mild, humid and shaded, in moist but well-drained humus.

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

Nothing specific has been published. The records come from lowland Northland and Auckland, where Blechnum grow on damp, shaded banks and on the floor of coastal forest.

Lowland; the climate sites are at 7–40 m.

New ZealandNorthlandAuckland

🔒 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.