Asplenium fontanum

Fountain spleenwort

A small, tufted evergreen spleenwort of limestone crevices in the mountains of south-western and central Europe, with finely divided, bright green fronds up to about 20 cm long. It grows in cool, shaded cracks on north-facing rock or under overhangs. It is best grown outdoors in a rock garden, trough or wall crevice rather than as a houseplant.

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

Cracks and fissures in limestone crags in cool, shaded positions, especially north-facing faces and under overhangs.

About 300–2,400 m, mainly in the mountains. The 154 measured records with elevation span 425–1,394 m, median 760 m.

FranceSpainSwitzerlandItalyAustriaGermanyMoroccoWest Himalaya

🔒 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.