Species library › Asplenium › Asplenium vespertinum
Ferns Partly documented

Asplenium vespertinum

western spleenwort

A small rock fern from southern California and Baja California that grows in moist, shady rock crevices, often under cliff overhangs. Its range has a Mediterranean climate, so it grows in the cool, wet winter and needs a drier, cooler-rooted rest in summer.

Asplenium vespertinum
Photo: John Lovis, CC BY 4.0, via Wikimedia Commons
At home, aim for
Day Cool-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Ordinary room humidityBand in Plantistry
Light ShadeDLI and PPFD in Plantistry
Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Moist, shady, rocky places such as the shade beneath cliff overhangs and in rock crevices. It forms dense clusters of fronds to about 30 cm, each with 20-30 narrow, lobed pinnae.

No elevation range is given in the sources consulted. It is generally a plant of coastal and foothill canyons.

California (southern)Mexico (Baja California)

🔒 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 4.0 licence, unmodified.