Dryopteris expansa
Dryopteris expansa
· fern · introduced
Last updated
Data Coverage 0 of 6 dimensions
As of March 31, 2026, soil temperature at Kent / Auburn is 47.7°F. Dryopteris expansa is in early-season conditions in Zone 8b.
Alpine buckler fern (Dryopteris expansa, Polypodiaceae) is a deciduous fern with fronds reaching 30 to 120 centimeters. It is found across cool-temperate regions of North America, Europe, and Asia.
Cultural requirements, pest and disease associations, and cultivar information have not been documented. The plant contains filicin, a compound historically used as an anthelmintic. The profile is a stub awaiting enrichment.