Corylus americana - Hazelnut, American FilbertHazelnut is a rounded multi stemmed native deciduous shrub with edible nuts that taste similar to European filbert. The double toothed dark green leaves turn various colors in fall, from combinations of orange, rose, red, yellow, and green. In spring bloom the long yellow brown male catkins that persist into fall and inconspicuous small red female flowers. Female flowers give way to edible nuts encased in hairy, leafy husk like bracts. Grows best in