How to Grow Hazelnut Tree Seeds

Hazelnut trees (Corylus species) are attractive, productive trees that provide delicious nuts and valuable wildlife habitat. Growing hazelnut trees from seed requires patience, but the process is straightforward and rewarding. By following the proper stratification and planting methods, you can successfully grow healthy hazelnut seedlings that may eventually produce nuts for years to come.

Why Grow Hazelnuts from Seed?

Growing hazelnuts from seed is an affordable way to establish multiple trees and can be an enjoyable project for gardeners and tree enthusiasts. Seed-grown trees may vary from their parent plants, making each tree unique. Hazelnuts also make excellent additions to edible landscapes, windbreaks, and wildlife gardens.

Step 1: Collect Fresh Hazelnuts

Start by gathering fresh, mature hazelnuts in autumn after they naturally fall from the tree.

Tips for selecting seeds:

• Choose large, healthy nuts.
• Avoid nuts with cracks, mold, or insect damage.
• Discard lightweight nuts that may be empty.

Fresh seed generally has the highest viability and best germination rates.

Step 2: Cold Stratify the Seeds

Hazelnut seeds require a period of cold, moist stratification to break dormancy and encourage germination.

How to Stratify Hazelnut Seeds

1. Mix the nuts with damp peat moss, sand, or vermiculite.
2. Place the mixture in a sealed plastic bag or container.
3. Store in a refrigerator at 33–41°F (1–5°C).
4. Maintain moisture throughout the process.

Stratification period: 10–12 weeks

Check periodically to ensure the medium remains damp but not soggy.

Step 3: Prepare Containers

While the seeds are stratifying, prepare containers for planting.

Container Requirements

• Deep pots with drainage holes
• Quality, well-draining potting mix
• Containers at least 8–12 inches deep

Hazelnuts develop strong taproots, so deeper containers help support healthy root growth.

Step 4: Plant the Seeds

After stratification is complete, plant the seeds indoors or in a protected outdoor location.

Planting Instructions

• Plant 1–2 inches deep.
• Position the pointed end upward if visible.
• Cover lightly with soil.
• Water thoroughly after planting.

Place containers where they receive bright light and moderate temperatures.

Step 5: Germination

Germination may take several weeks and requires patience.

Ideal Conditions

• Bright, indirect sunlight
• Consistently moist soil
• Cool temperatures

Most hazelnut seeds germinate within 4–8 weeks, though some may take longer depending on variety and conditions.

Step 6: Care for Young Seedlings

Once seedlings emerge, continue providing proper care.

Seedling Care Tips

• Keep soil evenly moist.
• Provide plenty of sunlight.
• Protect from extreme heat and frost.
• Avoid overwatering.

Young hazelnut trees often grow slowly during their first season while establishing roots.

Step 7: Transplant Outdoors

After one to two years of growth, seedlings are usually large enough to transplant into their permanent location.

Site Selection

Choose a location with:

• Full sun to partial shade
• Well-drained soil
• Good air circulation

Spacing

Plant hazelnut trees 15–20 feet apart to allow adequate room for mature growth.

Spring and fall are generally the best times for transplanting.

Step 8: Long-Term Care and Patience

Hazelnut trees require regular care while they mature.

Ongoing Maintenance

• Water during dry periods.
• Apply mulch around the base.
• Control weeds and competing vegetation.
• Protect young trees from rodents and deer if necessary.

Most seed-grown hazelnut trees begin producing nuts in approximately 4–6 years, although some may take longer.

Common Hazelnut Growing Mistakes

Avoid these common issues:

• Skipping cold stratification.
• Allowing seeds to dry out.
• Overwatering containers.
• Planting in poorly drained soil.
• Transplanting seedlings too early.

Final Thoughts

Growing hazelnut trees from seed is a rewarding project that requires time and patience. With proper stratification, careful planting, and consistent care, your seedlings can develop into healthy trees that provide shade, wildlife value, and delicious nuts for decades. Whether you're creating an edible landscape or starting a small orchard, hazelnuts are an excellent tree to grow from seed.