Ash Borer Infestation

Emerald Ash Borer
Pablo Alcala / Lexington Herald-Leader / ZUMApress

Prevention
An arborist injects the trunk of a 57-in.-diameter (145 cm) blue ash tree in a Lexington, Ky., park with insecticide to protect the tree from the ash borer infestation. This photo is from June 2010.

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