Growing Hazelnuts in the Pacific Northwest

A series of publications covering all aspects of hazelnut production.

Growing Hazelnuts in the Pacific Northwest: Introduction

This publication gives a brief introduction to hazelnuts, which are sometimes called filberts. It provides an overview of hazelnut history, growth and production, geographic distribution, and hazelnut industry organizations.

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Pollination and Nut Development

This publication provides a glossary of botanical terms related to hazelnut pollination and describes the flower and nut development process, pollination, and related issues.

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Orchard Design

This publication outlines hazelnut orchard design considerations, including density and yield, spacing and arrangement of permanent trees, and loading zones. It also includes a brief description of procedures for establishing a new orchard.

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Orchard Nutrition

This publication lists the components of a comprehensive nutrient management strategy and provides nutrition guidelines for mature and new hazelnut orchards.

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Training and Pruning

This publication describes practices for pruning young hazelnut trees and mature orchards.

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Plant Propagation

This publication provides guidelines for purchasing and propagating planting stock. It describes simple layering, tie-off layering, grafting, and cuttings.

Jeff L. Olsen, David Smith | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Orchard Floor Management

This publication describes hazelnut orchard weed management practices including flailing, herbicides, intercropping, cover crops, and sucker control. It also briefly describes procedures used during nut fall and harvest.

Jeff L. Olsen, Ed Peachey | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Orchard Site Selection

This publication describes factors to consider when deciding to plant a hazelnut orchard and includes a table of native productivity ratings for soil series types in the Willamette Valley.

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Varieties

This publication includes tables that summarize characteristics of the main hazelnut varieties produced in the United States, lists varieties' susceptibility to eastern filbert blight, and shows varieties' compatibility with each other for pollination.

Jeff L. Olsen, Shawn Mehlenbacher, Rebecca L. McCluskey, David Smith | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Jun 2018

Want to learn more about this topic? Explore more resources from OSU Extension: Hazelnuts and nut crops

Was this page helpful?

Related Content from OSU Extension

Pruning Hazelnut Trees — A Basic Guide

Training is a term applied to trees from planting up to 4-5 years of age, and is used to encourage a strong tree structure capable of supporting heavy crops, and withstanding ice and snow loads.

Jun 2015 | Article

Growing Hazelnuts in the Pacific Northwest: Orchard Floor Management

Jeff L. Olsen, Ed Peachey | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Hazelnut IPM

Resources about integrated pest management for hazelnuts.

Nik Wiman, Vaughn Walton, Jay W. Pscheidt, Marcelo Moretti, David Lowenstein, Heather Andrews, Rachele Nieri | May 2019 | Collection Peer reviewed (Gray level)

Eastern Filbert Blight

A fungal canker disease of hazelnut that threatens production in Oregon but can be managed through pruning, fungicides and resistant cultivars.

Jay W. Pscheidt | Mar 2018 | Video

Growing Hazelnuts in the Pacific Northwest: Integrated Pest Management

This publication provides an overview of insect, disease, and vertebrate pest management in hazelnut.

Jeff L. Olsen, Jay W. Pscheidt, Vaughn Walton | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Hazelnut stewardship initiative highlights Oregon’s sustainable practices

Positive promotion can make a difference in the reputation of the state’s hazelnuts.

Nik Wiman | May 2021 | Impact story

Detecting and Controlling Eastern Filbert Blight

Learn the signs and symptoms of eastern filbert blight (Anisogramma anomala), from initial detection through death of tree branches.

Jay W. Pscheidt | May 1999 | Extension Catalog publication Peer reviewed (Orange level)

Oregon State hazelnut varieties save industry, expand production

Oregon State University research brought Oregon's hazelnut industry back from the brink. Now new farmers are embracing Oregon's state nut.

May 2019 | Impact story

Biocontrol: Natural Enemies of Key Pests of Hazelnuts in Oregon

Biocontrol, also known as biological control, uses living organisms to help control pest populations. Biocontrol is a key part of any IPM plan. Learn about some of the key pests in hazelnut orchards and the tiny friends of the orchard that consume them.

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

Potential new aggressive EFB strain infecting resistant hazelnut varieties

Eastern filbert blight is a fungal disease that has infected many hazelnut orchards in Oregon and Washington. Now some of the resistant varieties are showing signs of infection, notably aggressive cankers. Learn how to identify it, report it and manage it.

Nik Wiman | Dec 2023 | Article Peer reviewed (Gray level)

New Hazelnut Cultivar: Clark (OSU 276.142)

Describes characteristics of hazelnut cultivar 'Clark'.

Anita N. Azarenko, Shawn Mehlenbacher, David Smith, Rebecca L. McCluskey | Mar 1999 | Extension Catalog publication Peer reviewed (Orange level)

Hazelnut Cultivar: Lewis (OSU 243.002)

Describes characteristics of hazelnut cultivar 'Lewis'.

Anita N. Azarenko, Shawn Mehlenbacher, David Smith, Rebecca L. McCluskey | Jan 2021 | Extension Catalog publication Peer reviewed (Orange level)

Santiam Hazelnut (OSU 509.064)

Describes characteristics of 'Santiam', a new hazelnut cultivar from Oregon State University that is resistant to eastern filbert blight.

Rebecca L. McCluskey, Shawn Mehlenbacher, David Smith, Anita N. Azarenko | Jul 2005 | Extension Catalog publication Peer reviewed (Orange level)

Growing Walnuts in Oregon

Designed for both commercial and home growers. Explains how to determine whether the soil is appropriate for planting walnut trees. Covers different types of walnuts, including Franquette, Spurgeon, Hartley, Manregian, ...

Jeff L. Olsen | Mar 2006 | Extension Catalog publication Peer reviewed (Orange level)

Sacajawea Hazelnut (OSU 540.130)

Describes characteristics of 'Sacajawea', a new hazelnut cultivar released by Oregon State University.

Shawn Mehlenbacher, David Smith, Rebecca L. McCluskey | Aug 2006 | Extension Catalog publication Peer reviewed (Orange level)

Identification of Invasive and Reemerging Pests on Hazelnuts

Describes key identification features, life cycle, and pest status of filbertworm, filbert weevil, filbert aphid, and hazelnut aphid. Includes color photos.

Vaughn Walton, Ute Chambers, Amy J. Dreves, Denny Bruck, Jeff L. Olsen | Dec 2007 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Introduction

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Have a question? Ask Extension!

Ask Extension is a way for you to get answers from the Oregon State University Extension Service. We have experts in family and health, community development, food and agriculture, coastal issues, forestry, programs for young people, and gardening.

Ask us a question