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What is the best time of year to treat for emerald ash borer?
Delaying Emerald Ash Borer treatment could result in canopy dieback or tree loss. Applications should be made in the spring, about 30 days prior to expected adult emergence; however, treatment may be applied during the growing season (May – September) to protect trees.
Is emerald ash borer still in Illinois?
Emerald ash borer was first discovered/identified in the U.S. in Michigan in 2002. However, it is believed the beetles first arrived in the early 1990s and had begun killing trees in the Detroit area by 1998. EAB was first found in Illinois in 2006 in the Chicago area and has currently been found in 35 states.
What is best ash borer treatment?
There are four active ingredients used to control emerald ash borer: imidacloprid, dinotefuran, emamectin benzoate, and azadirachtin. Imidacloprid. Imidacloprid is the most easily applied and usually least expensive of the insecticides used to control emerald ash borer.
How much does it cost to treat an ash tree for emerald ash borer?
An average cost of treatment is approximately $11.00 per DBH. Dose rate of formulation and cost are determined by your tree’s diameter at breast height (DBH). Starting at 4½’ up from the base of the tree, measure the circumference of the tree’s trunk in inches with a measuring tape.
Can I save my tree from the emerald ash borer?
Can ash trees be saved from emerald ash borer? In many cases, yes. Ash conservation efforts are stronger than ever, and treatment options are available to protect trees. In fact, when applied correctly, EAB treatment is 85 to 95 percent effective.
How do I get rid of emerald ash borer?
Homeowners can protect ash trees against EAB with the systemic insecticide imidacloprid, applied to the soil at the base of the tree. It is most effective when applied in spring but can also be applied in fall. It is less effective on trees over 50 inches in circumference.
Is my ash tree worth saving?
Just look at your tree. An ash tree that has lost more than half of its leaves because of EAB should likely be removed, according to USDA research. But a tree with most of its canopy could be a good candidate for treatment. Next, weigh the cost of treatment versus the value of the tree.
How often should ash trees be treated for emerald ash borer?
Some products are applied annually, while others are applied every two or three years. Check the credentials and pesticide applicator certification of any business you hire to treat your ash trees.