Polypodium glycyrrhiza

The licorice fern of the Pacific Northwest, named for its sweet-tasting rhizome. It grows on mossy trunks of bigleaf maple, on rocks and on logs in mild, wet coastal forest. It is green through the cool, rainy winter and often dies back to the rhizome in the dry summer, so treat it as a winter grower.

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 on trees (epiphyte)

Where it grows wild

Grows epiphytically in moss mats on the trunks and limbs of bigleaf maple and other trees. It also grows on mossy rocks, cliffs and logs in humid coastal lowland forest.

Mostly lowland and coastal: median recorded elevation about 120 m, with records up to about 1000 m.

AlaskaAleutian Is.British ColumbiaWashingtonOregonCaliforniaIdahoYukonKamchatka

🔒 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 2.0 licence, unmodified.