// SPECIES PROFILE · SHRUB · NATIVE

American Hazelnut

Corylus americana

American hazelnut blooms in late January with the year's first dangling yellow catkins — a critical early-spring pollen source — and ripens edible filberts in their leafy fringed husks by August. Multi-stemmed clumping form makes it ideal for hedgerows.

// QUICK FACTS

Family: Betulaceae
Group: shrub
Native range: E. & C. North America incl. eastern OK
USDA hardiness: Zones 4–9
Mature size: 8–16 ft
Sun: Full sun to part shade
Water: Adaptable
Wildlife value: Catkins feed early-spring grouse, squirrel; nuts cached by jay, squirrel, chipmunk
Ecological role: edible nut · earliest spring catkins · hedgerow staple

American Hazelnut (Corylus americana) — *Corylus americana*. Photo via Wikipedia / Wikimedia Commons.

Field Notes

[ growing · ecology · siting · care ]

Smaller and more cold-hardy than the European hazelnut grown commercially, but edible and equally productive. Plant 2+ for cross-pollination. One of the foundational species in temperate-climate food forests.

Why it's on this list: edible nut · earliest spring catkins · hedgerow staple. Part of Rooted Revival's NE Oklahoma plant catalog — natives, ecologically positive non-invasive cultivars, and food crops worth growing in the Tulsa region.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In a hedgerow or thicket, american hazelnut pairs naturally with: downy hawthorn (Crataegus mollis), crossvine (Bignonia capreolata), aromatic aster (Symphyotrichum oblongifolium), inland sea oats (Chasmanthium latifolium), cosmos (Cosmos bipinnatus), and american beautyberry (Callicarpa americana).

Site american hazelnut on the woodland edge or in the mid-layer of a guild beneath taller canopy trees.

Photo Reference

// Corylus americana — American hazelnut
Photo: picklejar (iNaturalist, CC-BY-NC)