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Identifying & Managing the Bronze Birch Borer

 This webinar is part of the Spring 2018 series of Advanced Training Webinars for Master Gardeners sponsored by Oregon State University Extension

The Bronze Birch Borer is a wood-boring beetle spreading across the Pacific Northwest that can devastate landscape plantings of birch (Betula sp.). Early detection is the key to saving trees, but is not always easy with a pest that spends most of its life inside the tree. Further complicating management, the most effective treatments against Bronze Birch Borer contain the same active ingredients, neonicitinoids, that are controversial due to their potentially detrimental effects on pollinators. The spread of this pest leaves homeowners with some difficult, but navigable, management decisions. Nicole Sanchez will describe how to recognize the beetle and its damage and discuss recommendations for management, including reducing potential negative impacts on pollinators. She will also share her own plant detective experiences identifying the first known infestation in Klamath Falls, Oregon.

Presented by: Nicole Sanchez, Assistant Professor (Practice), Oregon State University Extension (Klamath County)

OSU Extension, Homeowner Guide to Managing the Bronze Birch Borer in the Upper Klamath Basin
US Forest Service, Forest Pest and Disease Leaflet 111 (to compare photos of similar beetles)
OSU PNW Nursery IPM, Bronze Birch Borer 
University of Minnesota Extension, Bronze Birch Borer and Twolined Chestnut Borer in Minnesota

Image credit: J.A. Davidson, Univ. Md, College Pk,

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This technology is supported in part by New Technologies for Agriculture Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture and membership funding. Any opinions, findings, conclusions, or recommendations expressed in the content are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. For more information, please visit You can view the terms of useat

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