Emerald Ash Borer

The emerald ash borer (EAB) insect is an exotic woodborer that was found to be attacking and killing ash trees in Michigan in 2002. The Emerald Ash Borer attacks only ash trees and is a devastating and destructive pest that greatly affects the urban forest. EAB is easily spread through the movement of firewood, logs and nursery stock.

Emerald Ash Borer Beetle
Since its detection, EAB has killed millions of ash trees and has spread into Indiana, Ohio, Illinois, Wisconsin, Iowa and other states. Discovered in Illinois in 2006, EAB has since spread throughout northeast Illinois into the nearby towns of Geneva, Batavia, North Aurora and Naperville as well as other locations statewide.

The first confirmation of EAB in Aurora was found in a “trap” tree located on the city right-of-way on Liberty Street just west of Route 59 in Du Page County in 2008. Since this initial confirmation, the EAB has spread throughout the City.

City’s Response to EAB Since Discovery in Aurora

Aurora has implemented a strategic removal and replanting program to mitigate the impact of tree canopy loss due to EAB. Moving forward, removals will be made on a tree by tree basis. 

Please contact the Customer Service Department if you have any questions or concerns at 630-256-INFO (4636).

Insecticide Options for Treating Ash Trees

Chemical treatment options do exist but have not been proven to be 100% effective. Consult a professional arborist for information. The insecticide options bulletin (PDF) is designed to answer frequently asked questions and provide the most current information on insecticide options for controlling emerald ash borers.

If in the opinion of the City's arborist the tree is not considered a hazard, homeowners whose trees are being chemically treated can request the tree not be removed. 

QUICK LINKS: Emerald Ash Borer Information Network (link)
                         Signs to Look For (link)