Skip to main content

Oregon State Flag An official website of the State of Oregon »

Forest health

Latest news

EAB pocket guide translated into additional languages

The pocket guide to EAB for homeowners has been translated into four additional languages. The guide had been available in English and Spanish. The new translations make the pocket guide available in the next four most common languages spoken in Oregon – Vietnamese, Russian, Korean, and Mandarin Chinese. The guides can be found on this page under the heading detailed information about the emerald ash borer.

Mediterranean oak borerMOB damage on tree

An invasive insect from Europe, the Middle East, and North Africa that attacks oak trees has recently been found in several Oregon white oaks in Wilsonville. The Mediterranean oak borer (Xyleborus monographus) transmits multiple fungal species to the trees it infests. Some fungal species may cause a disease called oak wilt, which may kill oak trees in as little as two to three years. View news releasefact sheet, and FAQ for more information.

Pest experts in Oregon and California are still learning about the Mediterranean oak borer, an invasive pest whose first appearance in North America was on the U.S. West Coast. While there's much left to discover about this tiny beetle and the harm it can do to oak trees, what is known has been gathered by ODF and the Oregon Dept. of Agriculture staff into a document to help land managers decide what steps they might take in response. 

Tree health webinar series: Why are my trees dying?

ODF Forest Entomologist Christine Buhl and instructors from OSU Extension and the USDA Forest Service taught a four-part online course this summer on what diseases, pests or other health issues that are threatening Willamette Valley tree species. View the webinar series.

Roundup of Oregon EAB news

About the Forest Health Unit

The Forest Health Unit helps maintain and improve the health of Oregon's private and state-owned forests.

Our forest health professionals conduct aerial and ground surveys to monitor forest insects and tree diseases. They provide technical advice and training in the use of integrated pest management principles to help professional foresters and landowners meet their management goals and objectives.

Stewardship foresters, urban foresters, forest entomologists and pathologists can help landowners identify forest pest problems and develop strategies to manage pests. Contact a stewardship forester or the Forest Health Unit for more information.

View more information about the unit.

Factsheets & information

Maps & data

Saving Oregon Ash video

For the past few years ODF's Forest Health team has been working with scientists from the USDA Forest Service on a first-of-its-kind effort to save as much of the gene pool of the Oregon ash tree from the expected ravages of the emerald ash borer. The borer is an invasive insect pest first seen in Oregon in summer 2022 that could nearly wipe out this tree as it has done to other ash species in the central and eastern U.S. Seed from throughout the Oregon range of our native ash species is being collected for long-term storage at two USDA Forest Service locations - Dorena Genetic Research Center in Cottage Grove and the National Seed Lab in Fort Collins, Colorado. Watch why this effort is so important to the future of Oregon wetlands and streamside woodlands.


Saving Oregon’s Tanoaks video

 

Drought and forest health video

 

Bark beetles part 1 video

 

Bark beetles part 2 video

 

Bark beetles part 3 video

 
Report an invasive pest

Resources

Email updates

Sign up to receive updates about diseases, pests or other health issues.

Contact

Forest Health Unit
Email

Organizations

Oregon Bee Project

Web​site​​​

Oregon Invasive Species Council