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Emerald Ash Borer

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2301 East Sand Lake Road
Lindenhurst, IL 60046
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  • Phone: (847) 356-8252
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General Information
The Emerald Ash Borer (EAB) has infected a large number of trees within the community.  The Village has an inventory of all ash trees, the condition of those trees, and will remove infested ash trees based on the severity of their condition. This information has been compiled to help you better understand what EAB is, to help you consider your options in addressing it on your property and to update you on the Village's actions and responses to this threat. 

Ash Borer

EAB is an exotic beetle that was discovered in southeastern Michigan near Detroit in the summer of 2002. The adult beetles nibble on ash foliage but cause little damage. However, the larvae (the immature stage) feed on the inner bark of ash trees, disrupting the tree's ability to transport water and nutrients. The EAB probably arrived in the United States on solid wood packing material carried in cargo ships or airplanes originating in its native Asia. Since its discovery, EAB has:

  • Killed tens of millions of ash trees in southeastern Michigan alone, with tens of millions more lost in Illinois, Indiana, Kentucky, Minnesota, Missouri, New York, Ohio, Ontario, Pennsylvania, Tennessee, Quebec, Virginia, West Virginia, and Wisconsin.
  • Caused regulatory agencies and the USDA to enforce quarantines (MichiganIllinoisIndiana,IowaMarylandMinnesotaMissouriOhioNew YorkOntarioPennsylvaniaTennessee,VirginiaWest VirginiaWisconsin, and Kentucky) and fines to prevent potentially infestedAsh Leaves ash trees, logs or hardwood firewood from moving out of areas where EAB occurs.
  • Cost municipalities, property owners, and other government agencies tens of millions of dollars.
Ash Trees

The EAB feeds solely on Ash Trees.  While there are several different ash species, they share some common characteristics. Ash leaves are perhaps the easiest way to identify if a tree is an ash. These leaves will have 5-11 smaller leaflets attached that grow directly across from each other and are either smooth or have very fine "teeth." Aside from these leaves, older ash trees will have a distinctive diamond-shaped bark while younger trees will have a smooth bark surface. Finally, ash trees have dry, oar-shaped seeds that hang in clusters from the tree until falling in late fall. More information on identifying ash trees can be found in the following article "Distinguishing Ash from Other Common Trees."

Identifying Infestation
The symptoms below indicate the possible presence of emerald ash borer:

  • Jagged holes produced by woodpeckers working to extract larvae from the treeAsh Tree Hole
  • D-shaped exit holes (approximately 1/8 inch in diameter) on the branches and trunk
  • Vertically split or cracked bark above the larval feeding galleries
  • Wilting and yellowing foliage throughout the tree or limited to certain branches
  • Canopy thinning and branch dieback occurring initially in the upper third of the tree
  • A large number of shoots that arise below the dead portions of the tree, particularly at the tree base
  • Distinct serpentine shaped galleries packed with excrement under bark
What can I do?
Depending on the situation, property owners have two options: outright removal or treatment of their trees.  Contact an International Society of Arboriculture (ISA) certified arborist to see what options you have for treatment. A list of certified arborists or local landscaper can be found at this web address: http://www.isa-arbor.com/faca/findArborist.aspx.

Please note that treatment, depending on the insecticide used, may be effective for one or two years and then will need to be reapplied and will be a long-term commitment. Thus treatment may be more expensive than removing and replacing a tree. Further, if your tree does die, the Village may require you to remove it in order to protect the public. 

If you are having a tree removed, make sure that your contractor has signed an EAB compliance agreement with the State of Illinois Department of Agriculture. This agreement outlines how to handle infested wood to slow the spread of EAB.
What else can I do to help?
EAB is not a naturally fast moving pest (about .5 miles per year) but has been able to spread through the movement of infested firewood. Please do not move ash firewood. Further, please ensure that any contractor you hire to remove or treat your tree has signed the EAB Compliance Agreement with the State of Illinois Department of Agriculture.
Village actions to mitigate EAB impact.
As part of our regular monitoring and education program, the Village:
  • regularly inspects ash trees to determine whether they are infested
  • removes infested trees positively identified by the Illinois Department of Agriculture
  • consults residents on EAB information  
  • stays current on EAB information as provided by various agencies
In addition to this, the Village has an EAB Response Plan, which will include ongoing monitoring of Ash trees in the Village, removal of infected trees, public education, and a possible enforcement program for the removal of Ash trees on private property which have been identified as infected with the EAB. 
Please contact the Village Hall at 847-356-8252 for additional information or assistance with identification of EAB.