Hazelnut — Growing reference
| Scientific name | Corylus avellana |
|---|---|
| First harvest or flowering (days) | 1095–2190 |
| Measured from | Transplant |
| Plant spacing (cm) | 243.8–457.2 |
| Mature height (cm) | 243.8–609.6 |
| Mature spread (cm) | 243.8–457.2 |
| USDA hardiness zones | 4–9 |
| Light | Full sun |
| Water | Moderate |
| Sowing method | Transplant |
Growing directions
Hazelnuts require cross-pollination and are wind-pollinated, so plant at least two different cultivars within 20 feet of each other; pollen is shed in late winter before leaves emerge. American hazelnut (C. americana) is hardier and more disease-resistant than European types; many gardeners grow hybrid selections for both traits. Eastern filbert blight (Anisogramma anomala) is a serious fungal disease in the eastern United States — choose blight-resistant cultivars such as Jefferson or York for eastern plantings. Harvest in late summer when nuts begin to fall from the husks on their own.
Source and local conditions
Typical planning ranges from OpenPlantDB (CC0). Cultivar, climate, season and growing method can change these values. Confirm the seed label and local guidance before planting.
Source & verification
OpenPlantDB · CC0