Posts tagged Emerald Ash Borer

Fight Emerald Ash Borer

Julie Washington - Plain Dealer 060115.01By Julie Washington, The Plain Dealer
On June 01, 2015

FIGHT EMERALD ASH BORER: Early detection is key to fighting the emerald ash borer (EAB), a destructive tree insect. Arborjet, a company dedicated to developing remedies for saving ash trees, offers tips on how to spot the emerald ash borer. Look for:

  • Canopy dieback – Beginning in the top 1/3 of the tree, leaves stop growing to the tips of the branches and progresses until tree is bare.
  •  Shoots from the roots – Sprouts grow from the roots and trunk, and leaves often appear larger than normal.
  • Splits in bark — Vertical fissures appear on bark.
  • A tree expert points out the markings left from emerald ash borer larvae on an ash tree. The invasive pest has killed tens of millions of ash trees in the United States and Canada.

    The markings (feeding galleries) left from emerald ash borer larvae on an ash tree. The invasive pest has killed tens of millions of ash trees in the United States and Canada.

    Grooves and D-shaped exit holes – Feeding galleries, or grooves, for larvae weave back and forth under the bark. Adults form D-shaped holes when they emerge from under the bark.

  • The markings (larval feeding galleries) left from emerald ash borer larvae on an ash tree. The invasive pest has killed tens of millions of ash trees in the United States and Canada.
  • Increased woodpecker damage – These birds peck at outer bark while foraging, and create large holes while extracting insects.
  • Here’s more information about emerald ash borer.

We can now fight back! There is a product, TREE-age, by Arborjet, that we can inject every other year that has shown over 90% control of the larvae that kill the tree. The injection is best done as a preventative, but we have had some success in trees with limited infestations.

ARBORjet.02The trees are dosed in milliliters. For example, a 12″ diameter ash requires just over 40 milliliters of TREE-age and costs about $150 + tax, every other year.  Not a whole lot of money to protect a prominent ash tree in your landscape.

If you have any ash trees that are currently not under our care, please contact us for a no-cost or obligation inspection to provide our recommendations. We might be able to protect your valuable ash tree, allowing you to enjoy its benefits for many years to come. And, if you have any neighbors or friends with ash trees, we always appreciate a referral. Call us at 440-4521-9589 or email


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Revolutionary Tree Health Solution


ArborJet’s Tree Injection system allows us to inject tree care medicines directly into the sapstream of trees.  ArborJet’s TREE-age product, when injected into healthy ash trees, provides two-year protection against the Emerald Ash Borer.

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Unique Tree Injection System to Protect & Save Trees

A short video about the unique ArborJet tree injection system that we use to protect ash trees from the Emerald Ash Borer.

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Deadly Emerald Ash Borer Confirmed in Shaker Heights

The adult stage of the Emerald Ash Borer (EAB). This is the mobile stage (it flies), the one which initially infests a tree by laying eggs in the bark crevices between mid-May to mid-August. The bright, metallic green adult is 1/2 inch long, has a flattened back, and purple abdominal segments beneath wing covers.

Last Friday (July 9, 2010), a Forest City Tree Protection crew identified our 1st confirmed case of an ash tree killed by the Emerald Ash Borer insect (EAB) in the City of Shaker Heights.  While removing a dead ash tree on a client’s property, the crew found the typical serpentine (S-shaped) feeding galleries created by the EAB larvae.  After EAB eggs hatch, the young larvae chew their way through the bark into the cambium, or growing layer of the tree trunk.  As the larvae mature, they continue feeding the the xylem tissue of the most recent annual ring.  This is the tissue the tree uses to translocate water & elements upward from the roots and sugars & starches made in the leaves down to the roots.  The larval feeding galleries weave back and forth across the woodgrain, disupting the movement of water, elements, starches, & sugars.  This in turn leads to the rapid demise and death of the ash tree.

When the EAB larvae mature and transform, the adults emerge through D-shaped exit holes in the bark, starting the life cycle all over again.  Noticing one of these D-shaped holes on the bark of a lower trunk section from the ash tree they had removed, our crew peeled away the bark, finding a large, mature EAB larvae and its S-shaped (serpentine) feeding galleries.

Pulling back the bark from the D-shaped exit hole, the crew found this well-fed and destructive European Ash Borer larva. (photo by Lauren Lanphear 07/09010)

Peeling away the bark on a section of trunk from ash tree we removed in Shaker Heights, the crew disovered the telltale serpentine feeding galleries of the European Ash Borer larvae. The tissue destroyed by the formation of these feeding galleries leads to a quck decline & death of the tree. (photo by Lauren Lanphear 07/09/10)

We brought the section of trunk back to our office where we could photograph the larva and its feeding galleries. We were able to extract the EAB larva from the trunk and get this picture.

We sent the above three (3) photographs to several entomologists with the Ohio State University and received confirmation of our diagnosis.

Once an ash tree is infested with EAB, the only option is removal.  However, there are highly-effective treatment options to protect healthy ash trees from attack by the EAB.

We will be applying insect control soil injections this fall (Sept) to protect ash trees from EAB next season (2011).  The average cost of an EAB protective treatment is $5.75 per inch of trunk diameter (across, not around).

If you have one or more ash trees on your property that you’d like to protect, call our office ASAP (216-381-1700) to have one of our ISA Certified Arborists inspect your tree(s) and provide a proposal.

‘Helpful Links:
Emerald Ash Borer Lifecycle
Signs & Symptoms of Emerald Ash Borer

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