Hazelnut
Corylus americana

Family: Betulaceae (beh-tyoo-LAY-see-ee) (Info)
Genus: Corylus (KOR-ih-lus) (Info)
Species: americana (a-mer-ih-KAY-na) (Info)

Category:

Shrubs

Height:

12-15 ft. (3.6-4.7 m)

Spacing:

6-8 ft. (1.8-2.4 m)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Sun to Partial Shade

Danger:

N/A

Bloom Color:

Red

Brown/Bronze

Bloom Time:

Late Winter/Early Spring

Mid Spring

Foliage:

Deciduous

Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing the rootball

From semi-hardwood cuttings

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting:

Allow unblemished fruit to ripen; clean and dry seeds

Regional

This plant has been said to grow in the following regions:

Huntington, Arkansas

Malvern, Arkansas

Morrilton, Arkansas

Keystone Heights, Florida

Welaka, Florida

Oswego, Illinois

Indianapolis, Indiana

Valparaiso, Indiana

Georgetown, Kentucky

Louisville, Kentucky

Roslindale, Massachusetts

Atlantic Mine, Michigan

Grand Rapids, Michigan

Grosse Ile, Michigan

Isle, Minnesota

Minneapolis, Minnesota

Aurora, Missouri

Cole Camp, Missouri

Piedmont, Missouri

Helena, Montana

Polson, Montana

Frenchtown, New Jersey

Fremont, Ohio

Jamestown, Ohio

Saint Paris, Ohio

La Grande, Oregon

Downingtown, Pennsylvania

Christiana, Tennessee

Brookshire, Texas

Walkerton, Virginia

Kalama, Washington

Olympia, Washington

Falling Waters, West Virginia

Rosedale, West Virginia

show all

Gardeners' Notes:

2
positives
6
neutrals
0
negatives
RatingContent
Neutral

On Jan 17, 2015, coriaceous from ROSLINDALE, MA wrote:

A great native shrub for supporting native wildlife in eastern N. America.

The nuts are tasty but too small for commercial production, and most people consider them too much work to shell (not to mention the work involved in keeping wildlife off them).

Plants are not self-fertile---at least two genetically different plants are needed for successful cross-pollination.

This species carries the endemic Eastern Filbert Blight without being seriously affected by it. The source of commercial hazelnuts, the European C. avellana, is very susceptible to this disease, and until recently US production was all in the Pacific Northwest, beyond the range of C. americana and the blight. However, despite quarantine, EFB has become a serious problem for commerci... read more

Neutral

On Feb 9, 2014, RosemaryK from Lexington, MA (Zone 6a) wrote:

I was scanning the university research sites to learn about the Eastern Filbert Blight (EFB). Apparently the colonists brought Corylus avellana to New England but the plants all died. Now they think it may be because the native Corylus americana carries the pathogen. They reportedly didn't even have the blight in the west coast where all the orchards of cultivated hazelnuts are until the 1960s.

Positive

On Apr 22, 2012, plant_it from Valparaiso, IN wrote:

Native from New England down through Florida. Excellent for attracting wildlife to your property. The nuts of American hazelnut, which have a higher nutritional value than acorns and beechnuts, also are eaten by squirrels, foxes, deer, northern bobwhite, ruffed grouse, turkey, woodpeckers and pheasants. The leaves, twigs, and catkins are browsed by rabbits, deer, and moose. The male catkins are a winter food for turkey and ruffed grouse. The dense, low growth habit provides cover and nesting sites for many wildlife species.

Large male catkins add interest in the Spring. Late summer nuts. Beautiful copper-red fall color.

Medium to large shrub that under some conditions can take the form of a small tree. Prefers full sun for best growth and development. Thoug... read more

Neutral

On May 10, 2010, Yooper1 from Atlantic Mine, MI wrote:

Grows wild up here. The only reason I haven't planted any into my yard is because the ones I've seen in the wild rarely have a ripe nut on them, thanks to the squirrels and chipmunks, so it would be pointless for me.

Neutral

On Sep 28, 2004, tcfromky from Mercer, PA (Zone 5a) wrote:

Also called the American Filbert, this small hedge bush is native to the eastern U.S. Two plants are needed to set fruit. They can grow to 8'. Nuts ripen in August. Grows in zones 5 - 8.

Positive

On Jan 14, 2003, MikeS wrote:

This shrub grows quite happily in Zone 3a/b and is often found growing wild in river flood plains. Can be increased from suckers. Somewhat slow to establish in cultivation but eventually makes a large nicely shaped bush. Blue Jays compete with squirrels for the nuts, quite entertaining.

Neutral

On Jan 13, 2003, lupinelover from Grove City, OH (Zone 6a) wrote:

Nuts must be protected from hungry squirrels to finish ripening.

Neutral

On Aug 31, 2001, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Easily grown in average, medium wet, well-drained soil in full sun to part shade. Prompt removal of root suckers will help maintain plant appearance, and, if desired, help prevent thicket formation.