One of the challenges posed by the arrival of the emerald ash borer in Iowa is distinguishing emerald ash borer signs and symptoms from what is "normal" decline and damage to an ash tree. It is unusual to have an adult beetle in hand for the determination and finding larvae inside a recently-attacked tree is a laborious and time-consuming process. More typically homeowners and tree care professionals have dead branches or trees and sloughing bark with borer tunneling under the bark.
The new publication, "EAB or Native Borer?" provides a side-by side comparison of emerald ash borer and several native borers (the ones that have always been in dying and declining ash trees). The new publication is available for free download at the ISU Extension Store.
This new publication joins other items useful in understanding the emerald ash borer and your response, including determining if you tree is an ash. All are available at the ISU Extension Store.
"Common Problems of Ash Trees." SUL 0021.
"Emerald Ash Borer Management Options." PM 2084.
Typical "S" shaped gallery of the emerald ash borer. Photo byWilliam M. Ciesla, Forest Health Management International. Bugwood.org
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