Crass Tree Experts

Facebook | Monday, June 29, 2026

Emerald ash borer is active in York County and Baltimore County — what property owners need to know right now

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Emerald ash borer isn't a future concern for Baltimore County and York County homeowners — it's a present one. This invasive beetle has been moving through our region steadily, and the mid-summer months are when newly emerged adults are most active and egg-laying is underway on ash trees across both counties.

Ash trees under EAB attack often don't look distressed right away. By the time you see crown dieback, S-shaped galleries under the bark, or increased woodpecker activity on the trunk, the infestation is usually well advanced. A professional inspection is the only reliable way to know where a tree actually stands.

Treatment is available and effective when caught early enough — but timing matters. Trees in early stages of infestation respond well to systemic insecticide treatments. Trees that have lost more than half their canopy are generally past the treatment threshold. If you have ash trees on your property, this summer is the time to have them looked at, not next spring.

Our team has been identifying and advising on EAB across Baltimore County and York County for years. If you've got ash trees you've been watching, do any of them show signs of unusual woodpecker damage or thin-looking crown growth this summer?

#CrassTreeExperts #EmeraldAshBorer


Image / Media Suggestion

Authentic job photo preferred: a crew member at the base of an ash tree showing signs of EAB damage (woodpecker feeding holes, crown dieback visible), or a close-up of S-shaped larval galleries under stripped bark. If available, a before/after pair showing a treated vs. removed ash works well. Real job documentation strongly outperforms stock images for this type of educational post.

Google Drive image folder.

Canva text suggestion: "Emerald Ash Borer Is Here" or "Your Ash Trees Deserve a Closer Look"


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