Blechnum arcuatum

A Chilean rainforest fern (quil-quil) of the Valdivian and north Patagonian region, growing along water courses and on wet road cuts. It wants cool, constantly moist conditions with mild summers and cold, wet winters, not tropical warmth.

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

Expects a seasonal restGrows in the ground

Where it grows wild

Grows on moist banks beside streams and on humid road cuts and slopes in temperate rainforest country of south-central Chile, usually in partial shade.

Recorded from 8 to 1000 m (median 241 m); literature gives sea level to about 1300 m.

ChileArgentina (Neuquén, Río Negro)

🔒 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 2.5 licence, unmodified.