TREES & Plants

Emerald Ash Borer Information For the Homeower & Community Groups/Green Industry

Current issues:  Impact of frigid temperatures on EAB.

Questions are being asked about the impact of recent frigid temperatures on the survival of EAB larvae.  Unfortunately, it may be less than expected.

Click here for research from USDA Forest Service

Click here for additional coverage from NPR



Community Groups/Green Industry

The Community Trees program at the Morton Arboretum has prepared a new handbook for use by municipal & commuity leaders as well as green industry professionals.  Click on the link below to access it:

EAB and Your Community.pdf


What is the condition of your ash tree? Have you checked it lately? A tiny insect called emerald ash borer (EAB) is ravaging millions of trees in the Chicago area. The most obvious signs of EAB attack are dead limbs near the top of the tree. This invasive pest is so aggressive that all native ash trees are at risk, and trees may die within two to four years after they become infested.

All 16 native ash species are susceptible to EAB attack. In northeastern Illinois, common susceptible ash species include green (Fraxinus pennsylvanica), white (F. americana), blue (F. quadrangulata), and black (F. nigra). Horticultural cultivars of these species are also susceptible. Healthy ash trees of any size are vulnerable to attack. The EAB does not attack mountain-ash, prickly-ash, or wafer-ash since they are not true ash or Fraxinus species. (Refer to "Ash Tree Identification" for information on how to identify ash trees.)

A new brochure, Your Ash Tree and EAB.pdf, serves as guide for homeowners dealing with emerald ash borer.

Here are links to help you with identification

Identify Ash Tree

Identify EAB

Identify EAB Symptoms

Links for EAB management options

insecticide options (North Central IPM Center)
insecticides (Minnesota Dept of Agriculture)
tree removal

Links for trees to replace ashes

Trees for northern Illinois
Trees for central Illinois
Trees for southern Illinois
Recommended Alternatives to Ash Trees for Michigan's Lower Peninsula

Links for EAB resources

Illinois Department of Agriculture

Hungry Pests

Plant Heroes