|CLINTON, Ill. (AP) -- Officials of the Illinois Department of Natural Resources say the state's largest ash tree will be treated to protect it from the emerald ash borer.
Specialists will visit the Howry family residence in Clinton on Monday to use a pesticide on the tree to thwart the invasive pest that has killed tens of millions of trees throughout the Midwest.
Officials say the tree is likely more than 150 years old - alive at the time of Abraham Lincoln.
It is 90 feet tall and 82 inches in diameter. By contrast, the average ash size in the Chicago metro area is 17 inches in diameter.
Clinton, in central Illinois, is about 160 miles southwest of Chicago.