Emerald ash borer (Agrilus planipennis) is an exotic, invasive, wood-boring insect that infests and kills native North American ash trees, both in forests and landscape plantings. Just like the Dutch elm disease that killed our native American elm trees, emerald ash borer (EAB) is capable of eliminating all ash trees from our forests and cities. This makes it one of the most serious environmental threats now facing North American forests.
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