Adiantum formosanum

A Taiwanese endemic maidenhair described by Tagawa, recorded only high in Taiwan's central mountains at 2,230–3,530 m. Unlike most maidenhairs it is a cold-climate plant, with frosty winter nights and cool, very wet summers. It needs cool, humid conditions and a cold winter rest, which is hard to give indoors.

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

It grows in the high mountains, most likely in the shade of forest, scrub and rocks, but no specific habitat account was found.

Recorded at 2,230–3,530 m, median 3,166 m (20 records): a subalpine plant.

Taiwan

🔒 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.