Cultivating Flora

How to Grow Hazelnuts (for nut production but also considered a fruit) in Ohio

Hazelnuts, also known as filberts, are prized for their sweet, rich flavor and nutritious profile. They are not only delicious but also boast numerous health benefits. As a crop, they are particularly appealing to Ohio farmers and home gardeners alike due to their adaptability to the climate and soil conditions prevalent in the region. In this article, we will explore how to grow hazelnuts successfully in Ohio, including site selection, planting techniques, maintenance, pest management, and harvesting.

Understanding Hazelnuts

Hazelnuts are the seeds of the hazel tree (Corylus avellana), which can grow as a shrub or small tree. They thrive in temperate regions and are well-suited to Ohio’s climate. With proper care, hazelnut trees can produce nuts within three to five years after planting. They are cold-hardy and can withstand winter temperatures as low as -30°F (-34°C).

Varieties of Hazelnuts

When selecting hazelnut varieties for cultivation in Ohio, consider those that are disease-resistant and well-adapted to the local climate. Popular varieties include:

Site Selection

Choosing the right location for your hazelnut trees is crucial for successful growth and nut production.

Soil Requirements

Hazelnuts prefer well-drained sandy loam or loamy soils with a pH between 6.0 and 7.5. They do not thrive in heavy clay soils or those that remain overly wet. Conduct a soil test before planting to determine nutrient levels and pH. You may need to amend your soil with lime or organic matter based on the results.

Sunlight and Spacing

Hazelnut trees require full sun for optimal growth, so select a site that receives at least six hours of direct sunlight daily. When planting multiple trees, space them 10-15 feet apart to allow for adequate air circulation and sunlight penetration.

Planting Hazelnut Trees

Timing is essential for successful hazelnut cultivation. The best time to plant hazelnut trees in Ohio is during the spring, after the last frost has passed.

Preparing the Planting Site

  1. Clear the Area: Remove any grass, weeds, or debris from the planting area.
  2. Dig Holes: Dig holes that are about twice as wide as the root ball of your saplings and equal in depth.
  3. Amend Soil: If necessary, mix compost or aged manure into the removed soil before backfilling.

Planting Techniques

  1. Position the hazelnut sapling in the center of the hole, ensuring that it is planted at the same depth as it was in its nursery container.
  2. Backfill the hole with soil and gently tamp it down to remove air pockets.
  3. Water thoroughly after planting.

Care and Maintenance

After planting your hazelnut trees, ongoing care is needed for healthy growth and productivity.

Watering

Hazelnuts require consistent moisture, especially during their first few growing seasons. Water regularly during dry spells but avoid waterlogging the roots. A deep soak every week during dry periods should suffice.

Fertilization

Fertilize hazelnut trees with a balanced fertilizer in early spring when new growth begins. A slow-release fertilizer containing nitrogen, phosphorus, and potassium (such as 10-10-10) is ideal. Follow manufacturer guidelines for application rates based on age and size of your trees.

Pruning

Prune your hazelnut trees annually during late winter or early spring before bud break:

Pest Management

Pest control is an essential aspect of hazelnut cultivation since these trees are susceptible to various pests and diseases.

Common Pests

  1. Filbertworm: These caterpillars feed on developing nuts; use insecticidal soap or neem oil if infestation occurs.
  2. Aphids: These small insects can cause leaf curl; control them by introducing beneficial insects like ladybugs or applying insecticidal soap.
  3. Spider Mites: Look for fine webs on leaves; increase humidity around plants and consider insecticidal treatments if needed.

Diseases

  1. Eastern Filbert Blight: A serious fungal disease; choose resistant varieties and remove affected limbs promptly.
  2. Powdery Mildew: This fungal infection appears as white powder on leaves; improving air circulation through pruning can help mitigate its spread.

Regularly inspect your trees for signs of pests or disease so you can take action quickly if issues arise.

Harvesting Hazelnuts

After several years of proper care, your hazelnut trees will begin producing nuts!

Timing of Harvest

Harvest typically occurs from late summer to early autumn when the husks turn brown and start to split open. The nuts will fall from the tree when they are ripe—this is an indication that they are ready for harvest.

Harvest Method

  1. Gently shake branches or use a mechanical shaker to dislodge nuts.
  2. Collect fallen nuts promptly to avoid damage from wildlife or mold.
  3. Remove husks from harvested nuts immediately after collection for better storage outcomes.

Post-Harvest Processing

Once harvested, hazelnuts require proper handling to maximize quality:

  1. Cleaning: Rinse off any debris and let them dry completely in a shaded area.
  2. Drying: Spread nuts out evenly on screens or trays; ensure even airflow around them until they reach a moisture level of about 8%.
  3. Storage: Store dried nuts in airtight containers in a cool, dark place for up to two years without losing quality.

Conclusion

Growing hazelnuts in Ohio can be a rewarding venture both economically and personally. With attention to site selection, proper planting techniques, ongoing maintenance, pest management, and careful harvesting practices, you can cultivate these delightful nuts successfully in your backyard or on your farm. Not only will you enjoy their delicious taste but also contribute positively to local biodiversity by supporting native pollinators with this valuable crop! Happy planting!