Polypodium arcanum

A Mexican Polypodium of pine-oak and cloud forest, growing on trees, rocks and banks in the highlands. Like many Mexican polypodies it is adapted to a dry winter: the fronds may curl in drought and recover when the rains return.

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

It grows as an epiphyte or on mossy rocks and banks in humid pine-oak and montane forest. Habitat detail comes from the genus in Mexico.

Records lie at 20–3246 m, with a median of 1900 m; most fall at 1500–2300 m.

Mexico CentralMexico GulfMexico NortheastMexico Southwest

🔒 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.