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Himalayan Birch susceptible to beetle borer insect? #889734

Asked November 12, 2024, 3:21 PM EST

Hi there, thinking about planting a Himalayan Birch in a light medium shade/ sun area. I was reading that a specific birch borer beetle had switched birches they attack years back all over Oregon. is the himalayan birch not a good choice these days for landscape tree? We plant a lot of evergreens and deciduous trees and shrubs that are resistant to Verticillium Wilt. Our soil seems to have that throughout much of our yard… please advise

Multnomah County Oregon

Expert Response

The main borer beetle of concern for birches is the bronze birch borer. All species of birch are susceptible, but some are considered more vulnerable than others. Himalayan birch (Betula jaquemontii) is listed as severely attacked. Drought-stressed trees are particularly vulnerable, so much depends on your soil quality and your landscape irrigation practices.

For further details please refer to the publications below:

https://extension.oregonstate.edu/catalog/pub/em-9189-homeowner-guide-managing-bronze-birch-borer?reference=catalog

https://www.fs.usda.gov/foresthealth/docs/fidls/FIDL-111-BronzeBirchBorer.pdf
An Ask Extension Expert Replied November 14, 2024, 3:56 PM EST

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