This ash tree volunteered from an old burn pile. I was hoping it would develop into a nice shade tree, but I’m afraid it is not to be. This is the first real sign of infestation I’ve seen in our neighborhood. We have a few other ash trees in the yard, and I would hate to lose them. Apparently there are some systemic insecticides available in the last few years, which I’m reading about at http://www.emeraldashborer.info The threshold for surviving is 50% canopy loss, so I think we’ll burn this tree in our woodburner, but will think seriously about treating the others.

Emerald ash borer grubs leave this typical “D” shaped exit hole in the Spring. Woodpeckers have also taken an interest.