Hazelnut (Corylus avellana) is a frost-hardy deciduous shrub native to Europe, western Asia, and northern Africa, prized for its showy edible nuts and ornamental value. Growing 12, 20 feet tall and spreading 8, 15 feet wide, this multi-trunked, suckering plant thrives in hardiness zones 4, 8 (though some sources suggest zone 3 or 9 may be possible), adapting to full sun or partial shade. It blooms in late winter to early spring with showy monoecious flowers on bare branches, followed by decorative hazelnuts that ripen by late summer. The plant tolerates average garden soils but prefers moist, organically rich, well-drained earth and needs only low maintenance once established.
Partial Sun
Moderate
4-8
240in H x 180in W
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Moderate
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This European native creates dense thickets naturally, making it exceptional as a living hedge with the bonus of an edible crop. Male and female flowers appear on the same plant without a pollinator partner needed, so a single shrub produces nuts. Its ability to spread via root suckers means you can shape it as a multi-trunked specimen or let it colonize an area for screening, and its deep winter bloom catches early-season pollinators when little else is flowering.
Hazelnuts are primarily grown for their sweet, oil-rich nuts, which are eaten fresh, roasted, or pressed for oil. The nuts are versatile in both sweet and savory applications, from baking and chocolate production to culinary oils and spreads. Beyond nut production, the plant serves beautifully as a living hedge or screen, and its early spring flowers are an asset for late-winter pollinators. The dense multi-trunked growth and natural thicket-forming tendency make it effective for privacy plantings, windbreaks, and ornamental hedgerows.
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Hazelnut seed germinates between 35, 65°F. Sow seeds indoors in late fall or early winter and stratify cold for 30, 60 days to break dormancy. This mimics the natural overwinter period seeds experience in the wild.
Transplant seedlings or rooted cuttings outdoors in early spring after the last frost, when soil is workable. Space 8, 15 feet apart depending on your desired density. Harden off container-grown plants by gradually exposing them to outdoor conditions over 7, 10 days before planting.
Direct sow stratified seed outdoors in fall, placing seeds about 1, 2 inches deep in prepared soil. Natural winter cold will complete stratification, and seeds will germinate in spring.
Hazelnuts mature in late summer and early fall, typically 12, 18 months after flowering depending on your region and growing conditions. Harvest when the shell has hardened and turned brown; nuts will naturally drop from the tree or can be gently knocked from branches onto a tarp. Collect fallen nuts daily to prevent squirrel predation. Allow freshly harvested nuts to dry for several weeks in a warm, airy location before storing or cracking.
Prune hazelnut in late winter while dormant to shape the plant and remove dead or crossing wood. If maintaining a tree form, remove root suckers promptly at ground level to prevent thicket formation. For hedge use, allow suckers to develop and prune the overall canopy in late winter to maintain desired size and density. Avoid heavy pruning that removes more than one-third of the canopy in a single year. Remove any diseased or damaged branches immediately.
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“Corylus avellana has been cultivated across Europe for centuries, thriving in the rich thickets, woodland borders, and hedgerows of its native range from Europe through western Asia to northern Africa. This species was traditionally grown for both its nuts and its role in managed hedgerow systems, where it provided food and structural barriers. The plant's long association with European agriculture and its ability to naturalize in temperate climates made it a foundational nut crop before modern commercial filbert breeding programs developed grafted cultivars. Today, the wild species continues to serve as the rootstock for improved hazelnut varieties, preserving its genetic heritage while supporting modern cultivation.”