Polypodium interjectum

Intermediate polypody is a hardy, wintergreen European fern with a creeping rhizome. It grows on mossy rocks, walls, banks and sometimes tree trunks, and favours mildly base-rich spots in light shade. Its new fronds come up in late summer and stay green through a cool, wet winter, so treat it as a cool-season fern.

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 rock (lithophyte)

Where it grows wild

Shaded rock faces, old mortared walls, hedge banks and mossy branches in mild, humid lowland and hill country. It prefers mildly basic to slightly acidic conditions.

Recorded from 30 to 1350 m, median 526 m.

Great BritainIrelandFranceBelgiumNetherlandsGermanySpainPortugalItalyCentral and northern EuropeBalkansTürkiyeCaucasusIranMadeira

🔒 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

Grow Polypodium interjectum? Add it to a free garden and its full profile opens. Pro opens all 38,374 profiles in the library, plants and fungi.

Start free Sign in

More Polypodium

Polypodium vulgare Polypodium glycyrrhiza Polypodium appalachianum Polypodium cambricum Polypodium virginianum Polypodium calirhiza Polypodium amorphum Polypodium californicum Polypodium hesperium Polypodium scouleri Polypodium abitaguae Polypodium chionolepis All 60 →

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 4.0 licence, unmodified.