Emerald Ash Borer
Emerald Ash Borer Information for the Homeowner and for Community Groups/Green Industry
Community Groups/Green Industry
The Community Trees program at The Morton Arboretum has prepared a new guide for use by municipal leaders as well as green industry professionals. Click on the link below to access it:
Emerald Ash Borer & Your Community
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. Affected trees may die within two to four years after they become infested.
All 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 & EAB", serves as guide for homeowners dealing with emerald ash borer. Also listen to "Where Have All the Ashes Gone?' - Andrea Dierich, Forest Pest Outreach and Survey Project Coordinator at The Morton Arboretum talks about Emerald Ash Borer (8:24 minutes)
Here are links to help you with identification
Links for EAB management options
Links for trees to replace ashes
Links for EAB resources
Links for reclaiming and utilizing wood from infested ash trees
Updated in 2012
- Emerald Ash Borer Identification 99%
Emerald ash borer (EAB) adults are bright metallic green beetles that are approximately 1/2 inch long and 1/16 inch wide. They have flat backs and rounded abdomens. Larvae reach a length of approximately 1 inch and are creamy white, flattened, and...
- Symptoms of Emerald Ash Borer Infestation 99%
Emerald ash borer (EAB) infestations often go undetected until the trees begin to show symptoms. A tree may be infested for a year or more before symptoms first appear. The symptoms listed below may indicate the presence of emerald ash...
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