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Hazelnuts and nut crops

Photo: Bob Rost (Cropped from original)
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OSU Extension supports Oregon’s nut growers with research-based information on crop selection, pest and disease management and orchard care. We provide tools, workshops and technical guidance to help growers maintain healthy trees and optimize nut production.

Nik Wiman, OSU extension hazelnut specialist.
Credit: Stephen Ward

Managing Eastern Filbert Blight in Oregon

Watch a short educational video about this fungal canker disease of hazelnut that threatens production in Oregon but can be managed. Then read more to learn the disease life cycle, the symptoms and signs of infection and management techniques that can be useful as new information emerges.

Learn what can be done

Latest resources

What should I know about buying and storing hazelnuts?

Q: I have several questions about hazelnut quality. Is there a best time of year to buy them? What should I look for when evaluating quality? Are some varieties known for better flavor or longer shelf life? What is the best way to store hazelnuts to prevent spoilage?

A: View answer | View all featured questions

2,4-D drift delays kernel drop in hazelnut

The herbicide 2,4-D drifting into the tree canopy delays nut drop in hazelnut orchards. Learn how to reduce the risk of 2,4-D drift in your orchard.

Marcelo Moretti, Linda Brewer, Joshua Miranda Teo | Jan 2025 | OSU Extension Catalog Peer reviewed (Orange level)

USDA assistance for farmers and livestock producers impacted by wildfires

USDA has assistance available to help. Producers impacted by wildfires should contact their local USDA Service Center to report losses and learn more about program options. USDA offers a suite of disaster assistance programs that can help with recovery.

USDA Farmers.gov | Jul 2024 | Online resource

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Related news

OSU pruning research helps hazelnut growers cut losses

Study shows some disease management costs do not improve returns.

Jay W. Pscheidt | Apr 2026 | Impact story

OSU Extension develops roadmap for Oregon organic orchards

Needs assessment targets processing, pests and Oregon-specific guidance to strengthen organic orchard profitability and resilience.

Todd Anderson | Mar 2026 | Impact story

OSU develops first-of-its-kind water stress index for hazelnut trees

Integrating advanced technologies into hazelnut farming offers a promising way to improve water management, enhance crop quality and tackle challenges posed by drought.

Nik Wiman, Lloyd Nackley, Dalyn McCauley | Apr 2025 | Impact story

See all news

Growing walnuts in Oregon

Whether you grow walnuts commercially or at home, learn how to plant, prune, fertilize and harvest these nutritious nuts in Oregon.

Learn more

Credit: mikeosphoto, Adobe Stock (Cropped from original)

Hazelnut resources

Biocontrol: Natural enemies of key pests of hazelnuts in Oregon

Chris Hedstrom, Nik Wiman, Heather Andrews, Adeetje Bouma, Matt Pedersen | Aug 2023 | Video Peer reviewed (Gray level)

Growing hazelnuts in the Pacific Northwest

A series of publications covering all aspects of hazelnut production.

Jun 2018 | Collection

Hazelnut Applied Research and Extension

Information on how to support the Orchards Program and their research efforts.

May 2024 | Online resource

Explore more resources

Upcoming Events

May 15

QPR Training - Saving Lives in Agriculture (in English)

3:00 pm - 4:15 pm PDT Online
Jun 5

Capacitación Preguntar, Persuadir, Referir (QPR por sus siglas en ingles) - Salvando Vidas en la Agricultura (en español)

2:00 pm - 3:15 pm PDT Online
Jun 10

QPR Training - Saving Lives in Agriculture (in English)

3:00 pm - 4:15 pm PDT Online
Jul 15

QPR Training - Saving Lives in Agriculture (in English)

3:00 pm - 4:15 pm PDT Online
See All Events

Meet Our Experts

Nik Wiman
Orchard Crops Specialist
Heather Andrews
Orchard Crops Faculty Research Assistant
Jay W. Pscheidt
Professor and Statewide Extension Plant Pathology Specialist
Vaughn Walton
Entomologist
See All Hazelnuts and nut crops Experts
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What should I know about buying and storing hazelnuts?

Q: I have several questions about hazelnut quality. Is there a best time of year to buy them? What should I look for when evaluating quality? Are some varieties known for better flavor or longer shelf life? What is the best way to store hazelnuts to prevent spoilage?

A: View answer | View all featured questions

See More Questions