Corylus colurna
Turkish Filbert

Family:

Betulaceae (Birch Family) 29

Genus:

Corylus (Filbert Hazel Walkingstick) 4

Plant Type:

Tree 583

Growth Forms:

Upright 605

Hardiness:

USDA Zone 4 552

Deciduous / Evergreen:

Deciduous 879

Flower Notes:

Yellow (Flowers are not too showy but the male catkins can be handsome; spring)

Foliage Notes:

Green (Attractive dark-green leathery foliage in summer); Yellow (Usually poor yellow-green fall color)

Stem Notes:

Gray-brown, glandular-pubescent, coarse,

Fruit Notes:

Brown (Nuts in early fall; not ornamentally important)

Ultimate Height:

40-50 feet

Ultimate Spread:

15-35 feet

Bloom Times:

March 74

Light Requirements:

Soil Notes:

Prefers a well-drained, loamy soil, but is pH adaptable

Maintenance:

Low 351

Diagnostic Characteristics:

Alternate, simple, broadly ovate to obovate leaves 2.5-6" long. Doubly serrate or crenate serrate margins that are somewhat irregular. Pubescence on veins beneath. Male catkins in spring are 2-3" long, often in groups of three. Fissures up and down the stem, more so with age.

Ecological Functions:

Food for Mammals 166

Purdue Plant Doctor

Parts and Problems of Hazel, Hazelnut, Filbert

Special Characteristics:

Additional Information

Horizontal branch structure (with lower branches often touching the ground), strong central leader, and bark give good winter character. Does great in hot summers and cold winters, very adaptable. Quite drought tolerant after establishment, leaves stay green when maples scorch. Needs supplemental water immediately after transplanting and until established. Otherwise drought tolerant. Nuts are edible and can be roasted.