Blechnum chilense

The Chilean hard fern (now Parablechnum cordatum), a large, leathery fern 0.9–1.8 m tall that can form a short trunk. It comes from cool, wet temperate southern Chile and is hardy enough for sheltered gardens; it holds the RHS Award of Garden Merit.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Dappled lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Wet ground in temperate rainforest, along streams, ditches and forest edges in south-central Chile, often in partial shade.

Mostly near sea level (median of the few elevation records about 20 m), up to around 1400 m.

ChileArgentinaJuan Fernández IslandsFalkland 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. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.