Insects

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For more information, or to contact us, please visit the Entomology Program website.

Featured Resources

2019 PNW Insect Management Handbook

A comprehensive guide to insect management in commercial crops and environments and in home landscapes and gardens in the Pacific Northwest. Covers pesticide safety and toxicity, protecting bees, adjuvants, mixing tables, calibration, and biological control. Other sections cover a wide variety of...

OSU Extension Catalog

Douglas Fir Insect Pests

The most common insects in the drought stressed or dead Douglas-fir.

By Ellen Michaels Goheen, Don Goheen | Article

Encouraging Beneficial Insects in Your Garden

Describes the three types of beneficial insects (predators, pollinators, and parasitoids) and the pests they control. Illustrates common beneficial insects of the Pacific Northwest. Explains how to protect beneficial insects from insecticides and create habitat for them. Includes a list of garden...

OSU Extension Catalog

Collecting and Preserving Insects

Collecting insects can be a fun hobby, and is also an important step in IPM. The resources in this collection will help you learn how to find and collect insects and arthropods, then prepare them so that they can be useful for identification and research efforts.

By Silvia Rondon, Mary Corp, | Collection

Latest News

Know garden pests before deciding on a path to control

Aug 9, 2019

Beneficial insects will often show up to feed on pest insects so don't kill indiscriminately.

By Kym Pokorny | News Story

Researchers determine ideal areas and timing for biological control of invasive stink bug

Jun 10, 2019

Biological control of the brown marmorated stink bug, an invasive pest that devastates gardens and crops, would be more effective in natural areas bordering crops or at times when certain insecticides aren’t being applied.

By Chris Branam | News Story

A look back on a year of gardening stories

Jan 12, 2019

A story about yellowjackets topped the most-popular list.

By Kym Pokorny | News Story

Read All News

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Integrated Pest Management

Upcoming Events

Why are my trees dying?

Eugene, OR

Fri, Oct 25, 2019 6:30 pm - 8:30 pm

Trees all over Lane County are displaying signs of poor health. Many trees are even dying. Is it drought? Insects? disease? Join, OSU Extension's Forest Health Specialist, Dave Shaw to discuss signs...

Ace Hardware Plant Clinic-Hood River

Hood River, OR

Sat, Oct 26, 2019 9:00 am - 1:00 pm

Have a gardening problem that you would like advice on how to solve? A bug that you would like to know what it is and if it's a pest or a beneficial? Stop by Ace Hardware in Hood River on the second -...

Native Plants! Why, Which & How to Use Them

Central Point, OR

Thu, Dec 5, 2019 6:00 pm - 8:00 pm

Native plants support pollinators and wildlife, and they require fewer resources to thrive. Learn why, how, when, and where to plant and replant with native species, including wildflowers, grasses,...

Meet Our Experts

Silvia I. Rondon

Entomologist

Jessica Green

Senior Research Assistant

Gail Langellotto

Master Gardener Statewide Coordinator

Will Jessie

South Valley Fields Crops Faculty

Have a Question? Ask an Expert!

Ask an Expert 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.

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My pond has become a fly nursery. How can I get rid of them?

I have a 4 year old 12,000 gallon koi pond with a large waterfall. I went to clean the waterfall filters and add barley hay for the algae last weekend only to find thousands, maybe millions, of black fly larvae. I scraped the waterfall as best I could and turned the waterfall back on. The koi...

By Will Jessie | Featured Question

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