Asplenium gravesii

Graves' spleenwort

A rare natural hybrid spleenwort of the eastern United States. It is generally treated as Bradley's spleenwort (A. bradleyi) crossed with lobed spleenwort (A. pinnatifidum). It grows in crevices of acidic sandstone and other non-limestone cliffs where both parents occur. It needs a cold winter, a gritty acidic crevice mix and bright shade.

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

Crevices in acidic sandstone, shale and other non-calcareous rock outcrops and cliffs in deciduous forest. Only scattered single plants are known, where the parents grow together.

Measured sites lie at 74–405 m in the Piedmont, Appalachian plateaus and Ozark–Ouachita uplands.

United States

🔒 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.