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Corylus cornuta Marshall
Beaked hazelnut, Beaked filbert
USDA Symbol: coco6
A dense, mound-shaped, thicket-forming shrub, 4-8 ft. tall. Yellowish-brown catkins are showy in late winter and early spring. The female bloom is obscure. The husk that covers the nut is extended, forming a slender beak. Fall color varies from bright yellow to deep wine-red.
The Beaked Hazel is a member of the birch family (family Betulaceae) which includes trees, often large, and some shrubs including alders (Alnus), hornbeams (Carpinus), and hophornbeams (Ostrya), as well as birches (Betula). About 135 species worldwide. About 20 native and 1 naturalized tree species and 8 shrub species in North America.
Plant CharacteristicsDuration: Perennial Habit: Shrub Leaf Complexity: Simple Leaf:
Green Autumn Foliage:
Brown Size Class:
Bloom InformationBloom Color: Yellow , Green
Bloom Time: Mar , Apr , May , Jun
, WY Canada: AB
, SK Native Distribution:
Nf. to B.C., s. to GA
& c. CA Native Habitat:
Upland forests; thickets
Growing ConditionsWater Use:
Medium Light Requirement:
Sun , Part Shade , Shade Soil Moisture:
Moist Soil pH:
Circumneutral (pH 6.8-7.2) CaCO3 Tolerance:
Medium Soil Description:
Various moist to dry soils. Conditions Comments:
Sometimes considered a more refined shrub
than C. americana. Can be pruned anytime. Tends to sucker from the roots and must often be thinned out. No extensive disease or insect problems. The west coast variety is Corylus cornuta var. californica.
is a smooth nut
with a very hard shell.
The nuts are rich in protein and fat a favourite of red squirrels and chipmunks. Snowshoe hare browse heavily on young shoots during the winter. The nuts are a preferred food of ruffed grouse, pheasant, hairy woodpecker and blue jay. The winter buds and spring catkins are a valuable protein source for ruffed grouse and American woodcock. (Shrubs of Ontario) Attracts:
Birds , Butterflies Larval Host:
Early Hairstreak (Erora laeta)
PropagationDescription: Corylus spp. may be propagated by seed. Rooted pieces may be separated from the plant for increase.
Seed Collection: Not Available
Commercially Avail: yes
Butterflies and Moths of North America (BAMONA)
is a larval host and/or nectar source for:
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2009-02-18
Research By: TWC Staff