Pyrrosia davidii

A small, tough felt fern with narrow, leathery fronds covered underneath in star-shaped hairs. It grows on rocks and occasionally tree bark across northern and western China. It is cold-hardy and drought-tolerant: when dry, the fronds curl, then they recover after rain, so it suits a bright, airy mount or a rock-garden crevice.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Mostly lithophytic on dry to moist rock faces and cliffs in open woodland and on mountain slopes, sometimes epiphytic on trunks; the felted fronds let it survive dry spells.

Recorded elevations are 700–2975 m, median about 1560 m, from few samples; the range spans the North China plain hills to the Hengduan Mountains.

China North-CentralChina South-CentralChina SoutheastInner MongoliaManchuriaTaiwanTibet

🔒 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.