Blechnum magellanicum

A large, cold-hardy fern of the temperate rainforests and wet scrub of southern Chile and Argentina, forming a short trunk with stiff, leathery fronds. It wants cool, humid conditions, a winter chill and soil that never dries out.

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 in wet temperate forest (Nothofagus and mixed rainforest), forest edges, bogs and stream banks, often in openings and clearings.

Recorded at 20–966 m, median about 850 m.

ChileArgentinaFalkland 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.