The emerald ash borer has been the cause for the death of
1,000's of ash trees and have forced quarantines throughout multiple counties
in areas of Northwest Ohio and Southeast Michigan (the quarantine zone
has expanded considerably and now covers multiple states). EAB larvae
feed on the trees tissue under the bark causing extensive damage, adults
feed on the leaf. This pest should be targeted in it's larvae stage.
D-shaped exit holes through the bark about one-eighth of an inch wide
S-shaped larval galleries just beneath the bark
Thinning canopy (starting at top of the canopy and working it's way down the tree)
Vertical splits in the bark of the tree
Shoots / saplings growing from the main trunk or base of the tree
What homeowners can do:
The Emerald Ash borer is a pest which does considerable damage in as little as 1-3 years.
Generally, Grounds Services can only perform treatment successfully on trees with less than 20% canopy loss due to the nature of the pest
(the damage to the ash tree that is seen is damage caused from the previous year, this years damage will be visible in the next growing season).
If your tree appears to have more defoliation than that, we can still review your trees though may not be able to service it.