Invasive species

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Should we treat ash trees for emerald ash borer?

P: I just read about the emerald ash borer (EAB) appearing in Oregon. We have two large very nice ash trees that we don't want to cut down, no signs of infestation at this time. Would you recommend we go ahead and treat these with the pesticide injection that treats for the borer, just in case?

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Sustainable management of the vine mealybug in organic vineyards (in English)

This review article from the Journal of Pest Science describes the management of vine mealybug in organic vineyards.

Arturo Cocco, Vitor Cezar Pacheco da Silva, Giovanni Benelli, Marcos Botton, Andrea Lucchi & Andrea Lentini | Mar 2021 | Online resource

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Controlling Invasive Plants

Some common garden plants have become invasive pests in wild habitats. In Oregon, these invasives include some favorites such as English ivy and butterfly bush.

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Photo Credit: yvonne navalaney - Adobe Stock (Cropped from original)

Invasive Insects

Spotted lanternfly resources (in English)

The spotted lanternfly is an invasive pest in the United States that was first detected in 2014 in Pennsylvania. It is a pest of numerous cultivated and wild hosts. It can cause serious damage to apples, grapes, stone fruit, landscape trees, and others and can be a nuisance pest in urban areas.This page offers an introduction to the pest, photos of each part of the insect's life cycle, and detailed videos for more information.

Dr. Surendra Dara | Apr 2021 | Online resource

Emerald ash borer resources

Learn how to identify the emerald ash borer (EAB) beetle and ash trees, what you can do and ways Oregonians are planning for and preventing the spread of this destructive insect.

Aug 2022 | Collection

Brown Marmorated Stink Bug (BMSB)

Information and resources about the brown marmorated stink bug (BMSB), an invasive

Nik Wiman, Rick Hilton, Clive Kaiser, Vaughn Walton, Rachel Suits, David Lowenstein, Victoria Skillman, Heather Andrews | Dec 2018 | Collection

Spotted Wing Drosophila (SWD)

Information and resources about monitoring, identification, and management of spotted wing drosophila (SWD), an invasive fruit fly.

Vaughn Walton, Linda Brewer, Bernadine Strik, Patricia A. Skinkis, Peter Shearer, Jana Lee, Man-Yeon Choi | Dec 2018 | Collection

Northern giant hornet resources (in English)

Information from the Washington State Department of Agriculture about the Northern giant hornet (formerly Asian giant hornet).

Oregon Master Beekeeper Program

Bronze Birch Borer (in English)

Information on the bronze birch borer from the Pacific Northwest Pest Management Handbook.

Jul 2018 | Online resource

Become an Oregon Forest Pest Detector!

Oregon Forest Pest Detectors (OFPDs) are trained to recognize the signs and symptoms of invasive forest insects. They apply these skills in their day-to-day activities as arborists, parks managers, foresters, community tree stewards, Master Gardeners and other roles.

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Aquatic Invasive Species

Zebra & Quagga Mussels Species Guide (in English)

This guide provides in depth information on invasive zebra and quagga muscles. It is a companion resource to the Menace to the West an invasive species curriculum. Appropriate for grades 8-12.

Samuel Chan, Tania Siemens, Rick Cooper | Mar 2021 | Online resource

Pest alert: Invasive zebra mussels arrive in Oregon in "moss" balls sold for aquariums

Pest alert! The highly invasive Zebra mussel has made it into Oregon through moss balls, popular among aquarium hobbyists and commonly sold in pet stores. Invasive species experts say the moss balls should be destroyed.

Adriene Koett-Cronn, Samuel Chan | Mar 2021 | Article

Latest News

Solve Pest and Weed Problems website gives gardeners solutions

The content – peer reviewed by the OSU Department of Horticulture – is presented in categories with information below each photo. Clicking on the photo takes users to another page that offers information about identification, ...

Mar 2023 | Impact story

OSU Extension quickly mobilizes to respond to emerald ash borer discovery

Extension curated and disseminated essential information about the devastating pest and assist with initial monitoring efforts to determine how far and fast the insect is spreading in Oregon.

Kym Pokorny | Jan 12, 2023 | News story

New Extension website helps solve pest and disease problems

Solve Pest and Weed Problems focuses specifically on the Pacific Northwest and prioritizes low-risk approaches.

Kym Pokorny | Nov 11, 2022 | News story

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Should we treat ash trees for emerald ash borer?

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