Emerald Ash Borer - an all-out assault on our ash trees

Ash trees across the Midwest are under attack by a small invasive beetle from southeast Asia: the Emerald Ash Borer. Here’s what you need to know:

What is Emerald Ash Borer?

  • First discovered in the U.S. in 2002 outside of Detroit, Agrilus Planipennis is a metallic-green beetle, about the size of a penny, that infests only ash trees.

  • Adult females lay 30-200 eggs in furrows within the bark. When the larvae hatch, they chew their way under the bark, interrupting the flow of nutrients and water.

  • Larvae lie dormant under the bark through the winter, emerging as adults in the spring, leaving D-shaped holes in the trees.

  • If left untreated, depending on the size of the tree, an infestation can kill an ash tree in 1-4 years.

What to do about it?

  • Proactivity is the best medicine. We’ve been seeing Emerald Ash Borers spread quickly across Northeast Ohio, so if you have ash trees on your property call an arborist right away for evaluation.

  • An arborist can assess whether a tree is healthy enough to receive treatment. You can also discuss the value of an individual tree – given its size, location and role in your landscape – to determine whether treatment is

  • There are four treatment methods: soil injection (most common), trunk injection, bark spray and canopy spray.

  • If a tree is a good candidate, treatment by a certified applicator can be 85-95 percent effective.

For an assessment of your ash and other trees, contact Ripley Tree Service for a free consultation. We are an independent family business serving Northeast Ohio since 2001.

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