The presence of the Emerald Ash Borer within the Village of Lisle has been confirmed by the Illinois Department of Agriculture.
Ash trees in Lisle and throughout Illinois have been at great risk from the Emerald Ash Borer. As you may be aware, the Emerald Ash Borer has been found in DuPage County and the surrounding counties of Will, Cook and Kane. Millions of ash trees have already been lost in Michigan from the Emerald Ash Borer. The Village will assist the IDA in implementing their EAB control efforts.
In April 2013, the Village of Lisle will begin a multi-year program of treating ash trees on the public right-of-way with insecticides to prevent and/or reduce the damaging effects of the Emerald Ash Borer.
Only ash trees greater than nine inches in diameter will be treated with the insecticide. The diameter of the trees will determine which insecticide is used. Xytect will be used on trees smaller than twenty inches in diameter while TREE-age will be used on larger trees.
Not every tree will respond positively to the treatment. Consequently, the goal of the program is twofold: to save as many ash trees as possible and to prolong the life of ash trees in order to manage removal of the dying trees.
Public Works employees will place a notice on your ash trees if treatment was rendered. Please water the tree at least once a week after treatment through June 30 to improve the effective of treatment. Please water the tree at least once a week after treatment through June 30 to improve the effective of treatment.
Local contractors who have completed the State Compliance Agreement requirements are listed below. The Village of Lisle is supplying the list of local contractors as a convenience to residents and is not endorsing these contractors.
| Kinnucan | 28877 Nagel Court | Lake Bluff | 847-234-5327 |
| Homer Industries | 14000 South Archer | Lockport | 815 838-6050 |
| Kramer Tree Specialists | 701 Church Street | West Chicago | 630 293-5444 |
| B. Hany & Sons | 1200 North Lombard Road | Lombard | 630 495-1831 |
| Steve Piper & Sons | 8871 Ramm | Naperville | 630 692-1100 |
Additional contractors can be found on the State Agriculture Web Site and the Illinois Arborist Web Site.
Identifying the Ash Tree
Identifying an ash tree can be done by looking at the leaves. The leaves are somewhat unique since they have several green leaflets per leaf stem, usually 7. The leaflets are located directly across from each other with one at the end.
More information on Ash tree identification.
Emerald Ash Borer
The Emerald Ash Borer is an exotic beetle from Asia which has now been found in Kane County. The Emerald Ash Borer, although small, approximately 1/2 an inch, can fly up to a mile from where it emerges.
Exit Holes in Tree
D-shaped exit holes can be found on trees where the adult beetles emerged. A tree with these holes has been infested for at least one year. They will be present on the branches and the trunk.
"Suckers" Develop
"Suckers," or new sprouts, may develop around the bottom of the main trunk of an infested tree. They can grow until they are 2-3 inches in diameter and are again attacked by the Emerald Ash Borer.
Thinning Canopy
Tree canopy will begin thinning and branches will die. First there will be yellowing of the leaves, then dead branches. The thinning will begin at the top third of the tree, then spread over time. Usually, a tree will live 2-4 years after thinning at the top of the tree occurs.
Notify the Village for verification or for more information
If you suspect your ash trees may be infested or have a question, please e-mail the Village Arborist.
Prevent Contamination
Firewood from ash trees is a potential carrier of the Emerald Ash Borer. Firewood from areas infested with the Emerald Ash Borer, or unknown sources should not be brought into Lisle.
Plant only reputable, locally grown vegetation from a supplier. Do not purchase stock from a contaminated area.
Fore More Information on the Emerald Ash Bore, click on the links below:
Illinois Department of Agriculture
Emerald Ash Borer
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