If for some reason the moth balls don't work, and if it is a bronze birch borer, then an easy (but more expensive) solution would be a product...
Thanks for the ideas.
I forgot to mention that the arborist did mention that the best thing I could do for the general health of the Cornus florida was to each year add...
The arborist was kind enough to mention that there was a systemic that I could apply myself to save money while we focused my remaining budget on...
Want to protect several cornus floridas from dogwood borers in zone 5/6 northwest NJ. Arborists explained that our favorite 15 foot Cornus florida...