Emerald ash borer (EAB) is one small pest that has caused a lot of damage.
Since the bug’s debut in the USA in 2002, our Davey Institute scientists have been researching the best way to control emerald ash borer.
Our goal has always been to save your ash trees! After all, with EAB, the stakes are high. There are a whopping 7 billion ash trees in the USA that are in danger. Frequently, ash trees compromise as much as 35 percent of suburban tree canopies.
EAB was once thought to be a death sentence for your ash trees. Now, we know it’s not.
Read on to learn the newest, latest information about this damaging pest and raise awareness about emerald ash borer.
Emerald ash borer is an invasive, wood-boring beetle from Asia that has been eating our nation’s ash trees since 2002. The bug itself is emerald in color, and it’s tiny – 1/2 inch in length and 1/8 inch wide.
While the emerald ash borer is small, the devastation this pest has caused is enormous.
Emerald ash borer has destroyed more than 50 million ash trees in 25 states. Through treatment, removal and tree replacement, the emerald as borer has cost an estimated $10 billion.
Once in your region, emerald ash borer will “ultimately kill all unprotected native ash trees” over the next 5 to 10 years said Colorado State University’s Whitney Cranshaw.
In mid-May, just as the black locust trees bloom, the adult emerald ash borer emerges and flies through September. The rest of the year, the larvae are developing beneath the bark.
And, that’s when emerald ash borer wreaks havoc.
The beetles lay eggs in the trunk of ash trees. The larvae then begin eating a portion of the tree beneath the bark. In turn, this destroys the tree vessels that carry water and nutrients through the tree.
As of June 2017, emerald ash borer has been detected in 29 states: Alabama, Arkansas, Colorado, Connecticut, Delaware, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Virginia, West Virginia and Wisconsin.
Once emerald ash borer is in your area, take action. Have your local, certified arborist inspect your trees for risk. Did we mention we offer a free emerald ash borer consultation?
Early treatment of EAB is more effective, less invasive and less costly. Plus, there’s a higher survival rate.
At Davey, we recently discovered a new way to detect emerald ash borer during the first year. That’s an entire year earlier than previously possible. When you spot EAB earlier, you can seek early treatment, which is more effective.
Look for these early symptoms of emerald ash borer:
Later on, look for these more pronounced symptoms of emerald ash borer:
When applied correctly, EAB treatment is effective 85 to 95 percent of the time.
For example, when EAB was found in Naperville, Illinois, they chose to treat their trees. Three years later, more than 90 percent of the treated ash trees show no signs of infestation. In communities, such as Naperville, tree inventories can save time and money.