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Tree pest migrates to Tennessee
The emerald ash borer is spreading. The invasive species has killed more than 50 million ash trees in North America since its discovery in 2002. A presentation from the state will be offered this Tuesday night at McMinnville City Hall.

Warren County is now under quarantine for emerald ash borer, an invasive species that attacks trees.
Gary Clendenon, plant inspector II from the Tennessee Department of Agriculture, will be providing McMinnville officials with a presentation of the risks concerning municipal trees this Tuesday, Jan. 24, at 6:45 p.m. The presentation will be offered at City Hall.
“I will speak to them about emerald ash borer and Hemlock Wooly Adelgrid,” said Clendenon. “Warren County is now quarantined for emerald ash borer, although we have not found it within the county borders. It has recently been found in White, Van Buren and DeKalb counties. The emerald ash borer has killed tens of millions of trees throughout the east.”
Hemlock Wooly Adelgrid has not been yet found in Warren County but is also in White, Grundy and Van Buren counties. Treatments are available for both pests.
In the summer of 2002, scientists realized widespread damage to ash in southern Michigan was caused by an introduced insect, the emerald ash borer. The pest is thought to have been established in Michigan for at least 10 years by the time of its discovery. By the time the beetle was detected in Michigan and adjacent Ontario, it had already infested a large area.
By the beginning of 2010, the known infestation affected more than 100,000 square miles in 12 states. By mid-2012, outbreaks had been detected in 16 states and in mid-2015 that same number was up to 25 states and two Canadian provinces. Outbreaks continue to be found at sites hundreds of miles from the nearest known location – indicating that infested wood continues to be illegally moved.
Since its discovery, emerald ash borer has killed more than 50 million ash trees in North America. As the emerald ash borer spreads, the damage will mount.
While the costs to urban areas have not been systematically estimated, Ann Arbor, Mich., paid nearly $4 million to cut down 10,000 trees.