By now you may have heard about the devastation being caused by the Emerald Ash Borer.  As of Fall 2007, there is evidence of the Emerald Ash Borer in both Clermont & Hamilton counties.

Since it's introduction to the US (starting in Michigan) in 2001, the Emerald Ash Borer has destroyed millions of ash trees. 

Experts estimate there are over 3.8 billion ash trees in Ohio forests.  Ash trees are also extremely common as street trees and ornamental shade trees.

It is extremely important to stop the spread of this devastating insect.  Below is a list of frequently asked questions on the Emerald Ash Borer.   For more information, visit the Ohio Dept of Nature Resources' information page on the Emerald Ash Borer.

Is there anything I can do to prevent infestation and save my Ash tree? What are my chances?
Scientists are working to find a solution to stopping the Emerald Ash Borer, with mixed results.

Tests done by Forestry professionals using “Merit” (found in Bayer Tree and Shrub) PRIOR to infestation have been successful in preventing infestation.   However, other tests using the same chemical have proven ineffective.  Until more information is known about treatment, a systemic application is highly recommended.

How do I tell if my tree is infested?

Symptoms of an infested tree include "D" shaped holes in the trunk, dieback starting in the upper branches (noticeably dead limbs), and suckering (shoots from the root zone).  Unfortunately, the he EABs start at the top of the tree and work their way downward.   This means that by the time you see the borer's "D" shaped holes, your tree is totally infested.

What do I do if my Ash tree is infested?
Timing is Key.  If the borer is found on your tree during the months of May through September, leave the tree alone.  The borer will not exit the tree if you take your tree down during these months you will be contributing greatly to the spread of the insect allowing it to destroy another tree. 

Remove the tree between the months of October and April when the borer is dormant.  Recommended options for removal of the EAB (that will prevent further spread)  include burning the tree or having it ground into double process mulch.  

Can the borer live in mulch?  
Not if it is double processed or a finer grade.  Do not purchase hardwood mulch that has not been double processed (ground down at least two times).   This type of mulch does not contain large enough pieces to sustain life for an Emerald Ash Borer.

What is the Emerald Ash Borer and where did it come from?
The emerald ash borer is an insect that bores into ash trees, ultimately killing the tree.  It is believed to be originally introduced to the U.S. unintentionally via boat transport from Asia to shipyards in Michigan ports.  In February of 2003, it was first found feeding on ash trees in northwest Ohio.  It then traveled to other areas in firewood or hitch-hiking on vehicles (infestation is occurring in counties along 1-75).  
 

Will the borer harm trees other than the ash?
The Emerald Ash Borer will bore into other hardwood trees.  However, because  the wood is too hard for the insect to live and complete a life cycle, damage is minimal.

What does an Ash tree look like?
The quickest way to identify an ash tree in this area is by the leaf formation.  Ash trees have compound leaves, meaning they have multiple leaflets on a petiole (or small branch).