How to Grow Filbert Hazelnut
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Filbert Hazelnut
Corylus avellana
shrubFilbert hazelnut is a deciduous shrub that produces delicious, nutrient-rich nuts enclosed in a leafy husk. Native to Europe and western Asia, it has been cultivated for thousands of years and is a major commercial nut crop. The plant is ornamental as well, with attractive catkins in early spring and golden autumn foliage.
When should you plant Filbert Hazelnut in your zone?
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Example Filbert Hazelnut timeline · Pittsburgh, PA (Zone 6b)
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Plant Filbert Hazelnut
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Filbert Hazelnut
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Filbert Hazelnut dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 4-8, with best production in zones 5-7
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Get my Filbert Hazelnut timeline →Growth Stages
Establishment
1-2 yearsYoung shrub developing root system and branch framework; minimal flowering
Water regularly, mulch around base, prune to open goblet shape for air circulation, protect from harsh winds
Vegetative Growth
2-4 yearsShrub growing taller and wider, developing multiple stems; catkins appear in late winter/early spring
Remove low branches for easier harvest, maintain consistent watering, apply balanced fertilizer in spring, thin competing stems
Flowering
February-March (4-6 weeks)Male catkins (yellow, elongated) and female flowers (tiny, red styles) appear on same plant; wind-pollinated
Plant multiple cultivars for cross-pollination to ensure good nut set, avoid frost damage during bloom
Nut Development
May-August (3-4 months)Fertilized flowers develop into clusters of nuts, each enclosed in a leafy husk; nuts grow throughout spring and summer
Maintain consistent moisture, watch for pest damage, thin excessive nut clusters if desired to encourage larger nuts, apply sulfur if powdery mildew appears
Harvest
September-October (4-6 weeks)Nuts mature, husks brown and split, nuts drop to ground; ready for collection and drying
Collect fallen nuts regularly, dry in warm, well-ventilated area for 2-3 weeks, store in cool, dry place, crack shells as needed
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove infected nuts, apply insecticide in late spring before egg-laying, use pheromone traps to monitor populations
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Prune out infested terminals, apply Bt (Bacillus thuringiensis) in spring, maintain good tree hygiene
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Dormant oil spray in winter, insecticidal soap in summer, encourage natural predators
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Prune out infected branches 12 inches below visible cankers, disinfect tools, plant resistant cultivars, burn infected wood
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Ensure good air circulation, apply sulfur fungicide in early stages, avoid overhead watering
Uses
Eating and Cooking
CulinaryFilberts are eaten fresh, roasted, or incorporated into numerous culinary applications including chocolate products, spreads, oils, and baked goods. They add rich, buttery flavor to both sweet and savory dishes. [source]
Hazelnut Oil Production
CulinaryCold-pressed hazelnut oil is prized for its rich, nutty flavor and is used in gourmet cooking, salad dressings, and as a finishing oil. High in monounsaturated fats and vitamin E. [source]
Traditional Health Uses
MedicinalHazelnut has been used in traditional medicine for its potential cardioprotective properties and high content of beneficial compounds. Rich in antioxidants, healthy fats, and minerals like magnesium and copper. [source]
Wood and Craft Uses
HouseholdHazelnut branches have traditionally been used for dowsing, basket weaving, and crafting. The flexible wood is also used for hurdle-making and thatching spars. [source]
Wildlife Food and Habitat
WildlifeFilbert nuts are an important food source for squirrels, birds, and other wildlife. The dense shrub also provides shelter and nesting habitat for various bird species. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Nuts are ready when husks turn brown and split open naturally, typically late September to October. Harvest by collecting fallen nuts from the ground. Wear gloves or use a nut gatherer to speed collection. Dry nuts thoroughly (2-3 weeks in warm, airy location) before storage. Store in cool (50-60°F), dry location in breathable containers. Crack shells with a nutcracker or specialized cracker tool.
Fun Facts
- 🌱 Filberts have been cultivated since ancient times; the Romans considered them symbols of peace and wisdom, often distributing them at peace treaties.
- 🌱 Oregon produces approximately 99% of the U.S. commercial filbert supply, with over 30,000 acres dedicated to cultivation.
- 🌱 A single mature filbert shrub can produce 10-50 pounds of nuts annually, and trees can remain productive for 50-100 years or more.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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