American Hazelnut
Corylus americana
Zones 2–8
Growing
Establishing an American hazelnut thicket begins with selecting a site where the shrub can develop its characteristic dense, colonial growth habit. Because this species is a woody perennial, you will typically plant nursery stock or start from seed in well-drained soil. While it is remarkably adaptable to various light levels, including shade, it thrives in full sun. If you are planting in an area prone to summer heat, ensure the soil remains moist, as shallow rhizomes can be vulnerable to intense, repeated drought or fire when the surrounding organic matter dries out.
As your shrubs mature, you may notice canker-forming fungi that can cause stems to girdle or break, or mildew that may strip leaves. However, the plant is generally hardy and lacks any serious insect pests. If you are using hazelnut as a windbreak, look for composite varieties like Sun Harvest Germplasm, which are specifically bred for better canopy symmetry and increased resistance to disease.
The nuts are highly nutritious and a favorite for local wildlife, including squirrels, deer, and various birds. When harvesting, you are looking for mature nuts that have fallen or are ready to be collected. Because this shrub is a vital component of a healthy ecosystem, its dense foliage also provides excellent nesting cover for many species.
| Sun | full sun |
|---|---|
| Water | medium |
| Grow time | >150 days |
| Height | >6ft |
| Spacing | >24in |
| Full sun | ✓ |
|---|---|
| Part shade | ✓ |
| Shade | ✓ |
| Life cycle | perennial |
|---|---|
| Category | nut |
| Growth habit | shrub |
| Season | cool |
| Frost tolerance | hardy |
| Height | over 6ft |
| Spacing | over 24in |
| Days to maturity | over 150 |
| Water | medium |
|---|---|
| Drainage | well drained |
| Soil ph min | 5.5 |
| Soil ph max | 7.5 |
| Propagation | |
| Seed | ✓ |
| Cutting | ✓ |
| Division | ✗ |
| Graft | ✓ |
| Tuber bulb crown | ✗ |
| Transplant | ✓ |
| Container ok | ✗ |
| Pollination | wind |
| Pollinator friendly | ✓ |
| Toxic parts | |
| Leaves | ✗ |
| Seeds | ✗ |
| Raw | ✗ |
| Wash before storing | ✗ |
|---|---|
| Ripens off plant | ✗ |
| Curing days | none |
| Shelf life | over 3mo |
| Storage methods | |
| Room temp | ✗ |
| Cool dark | ✓ |
| Fridge | ✓ |
| Freeze | ✓ |
| Can | ✗ |
| Dry | ✓ |
| Ferment pickle | ✓ |
| Blanch before freezing | ✗ |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sow | no | yes | yes | yes | no | no | no | no | no | no | no | no |
| Harvest | no | no | no | no | no | no | no | yes | yes | no | no | no |
References: Wikipedia · USDA PLANTS: Corylus americana (COAM3) · USDA plant guide · how this data is made