Hazelnut Pest and Beneficial Insects: An Identification Guide

With color photos and text, describes principal insect pests of hazelnuts (filberts) including life stages, symptoms of infestation, and techniques for sampling population levels. Also describes beneficial insects (generalist natural enemies) that can combat pest insects.

By Vaughn Walton | OSU Extension Catalog

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.

By Vaughn Walton | OSU Extension Catalog

2019 Hazelnut Pest Management Guide for the Willamette Valley

Learn how to control insects, weeds, and disease during each stage of hazelnut growth.

By Nik Wiman, Jay Pscheidt, Marcelo Moretti | OSU Extension Catalog

2017 Walnut Pest Management Guide for the Willamette Valley

Recommends pest management practices for walnut.

By Nik Wiman, Jay Pscheidt, Ed Peachey | OSU Extension Catalog

New Pest Alert: Cherry Bark Tortrix Moth

Describes cherry bark tortrix and methods for control.

OSU Extension Catalog

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