Emerald ash borer has been steadily moving through the Denver metro for several years now, and late summer is when the signs on an infested ash tree become easiest to spot: thinning canopy, D-shaped exit holes in the bark, and woodpecker damage from birds feeding on larvae underneath.
An ash tree that looks healthy in spring can decline fast once the borer takes hold, and by the time dieback is obvious in the upper canopy, the infestation is often already advanced. Catching it early gives homeowners more options, including treatment, rather than removal being the only path left.
Bear Creek's ISA-certified arborists know what early-stage EAB damage looks like on ash trees across Englewood, Denver, and Lakewood, and we can tell you honestly whether a tree is a treatment candidate or past the point where saving it makes sense.
If you have an ash tree on your property, now is a good time to have it looked at before winter dieback makes assessment harder.
A close-up job photo of an ISA-certified arborist inspecting an ash tree's bark or canopy, ideally showing the kind of thinning or damage described in the post.
Canva text suggestion: "Ash Trees Need a Look This Fall" or "Emerald Ash Borer Season Is Here"