This is a close up shot of the damage that the emerald ash borer does to ash trees, and eventually kills them. Ziggy1/Getty Images/iStockphoto By Scott Nunn | Updated June 5, 2024 12:28 p.m.

Since 2002, emerald ash borers have killed anywhere from 80% to 99% of mature ash in Southeast Michigan and Northeast Ohio. The death toll: tens of millions of trees.

"It's just a matter of time," a researcher said, before this invasive insect that is an East Coast nuisance pervades Michigan's Lower Peninsula.

Green and white ash trees are the two most common ash species and their range covers most of the Eastern United States and Canada. Other significant ash trees to cover significant ranges are black ...

For two decades, an invasive species has attacked ash trees in Michigan and now the tree population hangs in the balance. Fri, 06 Jun 2025 23:09:10 GMT (1749251350485) Story Infinite Scroll ...

Others, like Koch, are raising emerald ash borer eggs directly on the bark of young trees. And Dr. Richard Sniezko, a leading tree resistance breeder, infects pine saplings with white pine blister ...

The white ash, as well as less common varieties of ash found in the Catskills, are being attacked by the emerald ash borer. The vividly colored insect was first discovered near Detroit in 2002 ...

First detected in Michigan in 2002, the emerald ash borer (Agrilus planipennis) attacks all native species of ash trees, ... are creamy white and range from 1 to 1.5 inches in length.

Ash trees come in three different varieties: white, black and green. At least before the introduction of the emerald ash borer, they made up around 6% of trees in New Hampshire.