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Lilac/Ash Borer #623299

Asked April 11, 2020, 7:51 PM EDT

There are 8 mature ash trees and 3 lilac bushes that have lilac/ash borer. How do I treat to get rid of this? Pueblo West, CO.

Pueblo County Colorado

Expert Response

Here is a link to our fact sheet on lilac ash borer, it lists control options.
https://extension.colostate.edu/docs/pubs/insect/05614.pdf
Note that if you choose to go with a trunk spray you need to do it soon so you catch them at the time of egg hatch.
-Sherie S. Replied April 21, 2020, 5:17 PM EDT

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