Emerald ash bore - Ask Extension
We have a 30 year old Ash we have had treated ( preventative) and tagged every 2 years for about 8 years now ( approx ) our towns ash trees are dying...
Knowledgebase
Emerald ash bore #889721
Asked November 12, 2024, 1:04 PM EST
We have a 30 year old Ash we have had treated ( preventative) and tagged every 2 years for about 8 years now ( approx ) our towns ash trees are dying by the dozens . According to one tree trimming company even treated Ash are given about a 50/50 chance still getting the bore . What say your experts ?
Washington County Minnesota
Expert Response
I was not able to find the percent chance of an ash living if it is receiving treatment. If your tree is healthy and maintaining its canopy treatment can keep it healthy. Healthy trees are less likely to be impacted by insects and disease. Of note: not all ash trees are affected by the emerald ash borer. The link below offers a list of resistant ash varieties. in addition, it gives detailed information about the borer and treatment.
https://extension.umn.edu/tree-and-shrub-insects/emerald-ash-borer
https://extension.umn.edu/tree-and-shrub-insects/emerald-ash-borer
