Blechnum microphyllum

A small, hardy Andean fern from central-south Chile and adjacent Argentina, now often placed in Austroblechnum. It grows among rocks and in open montane woodland where winters bring frost and snow and summers are dry, so it needs cool conditions rather than tropical-fern care.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Grows in the southern Andes at 450–2,150 m, typically in rock crevices, on stony slopes and at the edges of Nothofagus woodland where moisture collects. Details are generalised from the genus and the measured climate.

Recorded at 450–2,150 m (median about 1,400 m), with snow cover likely in winter at the upper sites.

ChileArgentina

🔒 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.