Emerald ash borer has been steadily working through Maryland for years, and midsummer is when damage becomes easiest to spot on ash trees. Watch for thinning canopies, D-shaped exit holes in the bark, and increased woodpecker activity as birds go after larvae underneath the bark.
Once an ash tree is heavily infested, decline can happen quickly, sometimes within a single growing season. That creates a real safety concern, since ash wood becomes structurally unreliable fast once the borer has caused significant damage.
Catching an infestation early gives property owners more options for treatment. Waiting until the canopy has mostly thinned out usually means removal is the only remaining path.
Watts Tree Experts helps Frederick County property owners identify and respond to emerald ash borer damage before it becomes a bigger problem.
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A close-up photo of D-shaped exit holes in ash bark, or a canopy shot showing thinning consistent with borer damage on a local property.
Canva text suggestion: "Know the Signs of Ash Borer Damage" or "Ash Trees Decline Fast Once Infested"