Blechnum sprucei

A montane terrestrial fern of Central and South America, from Costa Rica through the Andes to northern Argentina and southeastern Brazil, mostly at 1,400–3,700 m. It lives in cool, wet cloud-forest country, so it wants steady cool temperatures, high humidity and constantly moist, acidic soil.

At home, aim for

Day Cool-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

Records come from montane and upper montane forest, forest edges and wet banks in the Andes of Ecuador and the Talamanca range of Costa Rica, with outliers in the Serra da Mantiqueira of Brazil. Blechnum ferns at these elevations commonly grow in openings, on road banks and in shrubby forest edges.

Recorded elevations 1,400–3,681 m, median 2,800 m (64 records).

Costa RicaColombiaEcuadorPeruBoliviaArgentinaBrazil

🔒 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.