On June 30, 2022, the Oregon Department of Agriculture (ODA) and Oregon Department of Forestry (ODF) confirmed the first infestation of the Emerald Ash Borer in Oregon. Native to Asia, the Emerald Ash Borer (EAB) was first identified in the United States twenty years ago, and has since spread to three dozen states. The EAB is deadly to all species of ash tree and is now considered to be “the most destructive forest pest in North America,” according to the ODA.
Our partners at Clean Water Services (CWS) and Tualatin Soil and Water Conservation District (TSWCD), in conjunction with the City of Forest Grove, have already taken steps towards mitigating the effects and spread of the EAB infestation. Their efforts have included mapping existing ash trees, planning for replacement plantings, and setting traps for the insects. CWS staff have also emphasized the importance of nurturing a diverse range of native plants, which can provide shelter, food and habitat in the event one species is threatened.
Here are some ways that you can help to slow the spread of the Emerald Ash Borer:
Never transport firewood. Burn it where you buy it.
Learn how to identify ash trees, emerald ash borers, and the signs and symptoms of infestation.
Report any EAB sightings and infestations to the Oregon Invasive Species Hotline.
If you have a confirmed EAB infestation on your property, work with a professional arborist.
Learn more about the EAB, other invasive pests, and how you can help with detection and response by taking the Oregon Forest Pest Detector's free online course.
