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Emerald Ash Borer
The Illinois Department of Agriculture is currently in the process of conducting a survey of Ash trees in and around the infested area in Kane County to establish boundaries for quarantine to prevent the spread of the borer. The Department of Agriculture is not sure how the beetle arrived in Illinois, but suspect that contaminated firewood from a quarantined area in Michigan may have been moved into the state. Currently, options for treating infested trees are limited and will depend on Illinois Department of Agriculture mandates. In most cases, complete removal of the tree is required. While preventative treatments are available for non-infected Ash trees, they will not work on already infested Ash trees. Results from the Illinois Department of Agriculture survey will determine the appropriate action to contain this pest. It is important for residents of Hanover Park to be diligent in inspecting their Ash trees for this pest. A resident reported the initial find in Kane County. If you suspect you have found an adult or larval form of this insect, freeze the insect and bring it to the Village's Forestry Division for identification. If you suspect an infestation you may contact the Illinois Department of Agriculture toll-free hotline at 800-641-3934.
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The Emerald Ash Borer,
a devastating insect pest from Asia, has become a great concern in
Illinois with the detection of a residential infestation occurring in an
area of Kane County east of Lily Lake. The beetle was first identified
in the United States in July 2002 feeding on Ash trees in southeastern
Michigan. Since the infestation in southeastern Michigan, the Emerald
Ash Borer has also been found in the following states: Michigan,
Maryland, Ohio, Indiana, and Illinois. The borer was brought to the
United States on wood packing crates from Asia. It is estimated that
approximately 20% of the tree population in the Chicagoland area and 30%
of the Hanover Park parkway tree population is Ash species. Illinois
has approximately 110 million Ash trees according to the Illinois
Department of Agriculture.
The Emerald Ash Borer
larvae tunnel throughout the phloem and outer sapwood of Ash trees
creating large galleries, eventually killing branches and entire trees.
The borer is difficult to detect in newly infested trees because
symptoms usually begin at the top of the tree. The adult is a small,
metallic-green beetle, about half the size of a penny. Typical signs of
infestation include the presence of the small metallic-green beetle on
or near an Ash, small D-shaped holes in the bark of the trunk and/or
branches, dieback in the crown of the tree, and suckers growing on the
trunk. Large vertical splits may also occur in the bark, and
woodpeckers may feed on the beetle leaving visible damage to the bark.
This borer infests and eventually kills all Ash trees, regardless of
size or health conditions.
The Emerald Ash Borer
moves only short distances by flying, but can survive long distances on
Ash nursery stock, logs, branches, and firewood. To avoid its
introduction into the Hanover Park area, please purchase only locally
grown nursery stock and locally cut firewood. Do not transport firewood
as this is thought to be one of the main methods this insect is spread.
Be sure to use all firewood in the winter so that no hidden larvae or
adult beetles can survive on logs left through the spring.
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