The Q&A Archives: Bronze Birch Borer

Question: Is there any organic spray to treat a birch tree which may already have some bronze birch borers to prevent them from spreading further through the tree?

Answer: The secret to effective (and reduced chemical use) birch borer control is really in the timing, so you might wish to contact your local UMASS Extension for the most up-to-date recommendations for your local area. They should also be able to help you verify whether or not the problem is truly borers rather than something else which would possibly be controlled by yet another method or on a different schedule. Good luck with your tree.

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