Asplenium bradleyi
Bradley's spleenwort is a small evergreen fern of the eastern United States that grows wedged into crevices of acidic rock such as sandstone, granite, gneiss and schist, from New York and New Jersey down the Appalachians to Georgia and Alabama, and in the Ozark and Ouachita Mountains. It is a fertile allotetraploid that arose from a hybrid of mountain spleenwort and ebony spleenwort. It needs cold winters, sharp drainage, acidic grit and partial light, and is a challenging plant for a trough or alpine house.
Where it grows wild
Tightly wedged into horizontal or vertical crevices in exposed acidic rock outcrops and cliff faces, in thin soil with a pH of about 3.5–5.0. It tolerates some shade but not dense shade, and it cannot compete with other plants on more fertile ground.
It grows at 0–1000 m. The 24 wild records with elevation span 0–756 m with a median of 213 m.
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The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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