Diseased tree

Asked December 14, 2019, 11:54 AM EST

Can you tell us what has happened, and possible solutions.? Thank you

Harford County Maryland

1 Response

We think the tree may be an ash tree and unfortunately, it does not look like it can be saved. There is a possibility that it was attacked by the emerald ash borer, an invasive insect. The streaking on the trunk/branches is called 'blonding' which is caused by woodpeckers looking for emerald ash borers in the trunk.
Compare to photos here: https://www.marylandbiodiversity.com/viewSpecies.php?species=13272).

EAB larvae can be found anywhere in the tree and woodpeckers will find them for food. The adult beetles make D-shaped exit holes when they emerge from the trees. You can read about emerald ash borer here: https://extension.umd.edu/hgic/invasives/emerald-ash-borer

These trees become very brittle very quickly when they die and you should consider having them taken down by a professional. When the damage is this extensive, there is nothing that can be done to save the trees, unfortunately.