Hazelnut Tree Care: Growing, Pollination & Maintenance

The hazelnut (Corylus avellana), a member of the birch family (Betulaceae), is a versatile deciduous shrub or small tree native to the temperate Northern Hemisphere. Valued for its flavorful nuts used in confections, oils, and culinary dishes, it thrives in home gardens with proper care.

Plant Characteristics

• Typically 12–15 feet tall with multiple stems arising near ground level, giving a bushy habit.
• Bark is smooth gray-brown, developing a crisscross pattern with age.
• Twigs are stiff, light brown with fine reddish hairs.
• Leaves are alternate, simple, broadly oval with a rounded base, 2.5–5 inches long, darker above and paler beneath with glandular hairs.

Unique Pollination

Hazelnuts require cross-pollination between compatible varieties. Unusually, they flower in mid-winter: male catkins release pollen carried by wind to tiny red female flowers. Fertilization occurs over spring, with nuts maturing by late summer. Each nut is enclosed in a hairy, leaf-like husk.

Site Selection & Planting

Choose a sunny, frost-free location with deep, well-drained sandy loam (pH 6.0–7.0). Plant dormant bare-root saplings 0.6–1.8 m tall in late winter. Soak roots in water with transplant solution for 30 minutes. Dig a generous hole, incorporate bone meal and organic compost, spread roots, backfill, water deeply, and mulch heavily (6 inches deep, 1-meter radius, keeping mulch away from stems).

Ongoing Care

• Watering: Frequent irrigation during establishment; mature plants tolerate some drought.
• Fertilizing: Light application in year one; established plants benefit from 10-10-10 fertilizer 3–4 times annually.
• Mulching: Maintain organic mulch to suppress weeds and conserve moisture.

With good care, hazelnuts begin bearing in 3–4 years. Though winter-hardy and drought-tolerant once established, consistent attention ensures reliable yields.