Deciduous, Shrubs, Trees
Although usually grown for their edible nuts (see Hazelnut), they make very attractive ornamental shrubs or small trees. The plants have separate female and male flowers. Female blossoms are inconspicuous; male ones are showy, appearing in pendent catkins on bare branches in winter or early spring. Leaves are roundish to oval, with toothed margins. Thin branches as needed in late winter; remove suckers when you see them.Corylus avellana
Grows to 10–15 ft. high and wide. This is one of the species grown commercially for nuts (for those descriptions, see Hazelnut). There are many ornamental varieties in this group.Corylus cornuta californica
Native to damp slopes below 7,000-ft. elevation, northern Coast Ranges and Sierra Nevada of California, north to British Columbia. Open, multistemmed, to 5–12 ft. high and wide. Roundish, somewhat hairy, coarsely toothed, 1 1/2–3-in. leaves turn bright yellow in autumn. Small nuts with flavorful kernels are enveloped in a leafy husk with a long, attenuated beak.
Graceful, arching branches densely clothed with oval, usually glossy leaves 1/2–1 1/2 inches lon...
Less hardy, lacier, and more compact (to 3–5 ft. tall and wide) than A. X grandiflo...
Dwarf (to 2–3 ft. high and 4 ft. wide) with shiny dark green leaves that hold on for a long time...