Insects and Spiders - native

unknown on May 18, 2023

Originally reported as Emerald Ash Borer (Agrilus planipennis)

Submitter does not have a specimen

Description of specimen

An Oregon ash growing along a cement "dock" at a barn. No signs of the exit holes for the borer, but suckers coming up from the base and vertical cracks (photo)

It's possible that the tree is growing so close to a cement block that it is stressed. It's also adjacent to a crumbling and decaying 100-year-old barn, so it could be another pest.


Thank you for your report! That tree is stressed! I can't see enough detail in your photo to tell what the problem might be. Here is the address of Oregon Department of Agriculture's IPPM Survey and treatment projects EAB page

Scroll down to find photos of Emerald Ash Borer Look-Alikes, the EAB Response Plan for Oregon, and more information about how to recognize EAB attack, so that you can monitor your tree. Emerald ash borer makes D-shaped holes about 1/8" wide.

Tom Valente
May 19, 2023, 3:18 a.m.