[Western Phil]

The ash borer larva eat their way through the inner bark making many intersecting tunnels cutting off water to the leaves. The chemical treatment makes one wonders if a process similar to the production of bt corn for the ash tree is practical? https://entomology.ca.uky.edu/ef118

[Hot Tabasco]

Any treatment has to be systemic and regularly applied but eventually the trees will succumb to the parasite...........