Since the Emerald Ash Borer (EAB) was first detected in Missouri in July 2008, this tree-killing pest has spread to a total of 75 Missouri counties and the City of St. Louis.
The Missouri Department of Conservation (MDC) reports the presence of EAB in 16 new counties across Missouri. Collaborative efforts by MDC staff, Missouri Department of Agriculture inspectors, and USDA Animal and Plant Health Inspection Service officers, EAB has been detected in Benton, Boone, Cooper, Douglas, Holt, Howard, Howell, Linn, Montgomery, Morgan, Nodaway, Osage, Ozark, Pettis, Putnam, and Randolph counties this year.
EAB is a small, metallic green beetle native to Asia that attacks all species of ash trees, including Missouri’s native green ash and white ash. In its larval stage, the insect kills ash trees by feeding on the vascular tissues just under the bark, slowly cutting off the trees’ flow of water and nutrients. Unfortunately, EAB kills more than 99 percent of the ash trees it attacks.
EAB will likely be found statewide within the next few years, prompting MDC Forest Entomologist Robbie Doerhoff to urge Missourians with ash trees in their yard to make a plan now to either remove those trees or treat them with an insecticide.
Read more from the MDC release below about the invasive EAB and information about how to determine if trees are infected and preventive measures to help save trees from the EAB.








