Polypodium cambricum

The southern polypody is a Mediterranean and Atlantic European fern of walls, rocks and mossy tree trunks. It grows in the reverse season: new fronds come up in late summer or autumn, it grows through the mild wet winter, and it dies back in summer drought. Grow it cool and moist in winter and drier in summer.

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

It grows on limestone rocks, old walls, cliffs and sometimes tree trunks, often in partial shade. It favours mild, frost-light places near the coast.

Recorded from sea level to 1950 m, median 322 m.

SpainPortugalFranceItalyGreat BritainIrelandGreeceTürkiyeMoroccoAlgeria

🔒 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.