Emerald Ash Borer

Emerald Ash Borer
The Emerald Ash Borer (EAB) is an invasive species from Asia that is thought to have arrived in the United States in wood packing material. The pest was first detected in Michigan in 2002. In August of 2008, it was announced that EAB had been found in the Village of Newburg, Ozaukee County, WI. Since then, EAB has been found a total of sixty nine counties statewide. The larvae (the immature stage) feed on the inner bark of ash trees, disrupting the tree's ability to transport water and nutrients. Overtime this damage can cause canopy dieback, flaking bark, epicormic sprouts, and eventually death unless treated. Treatment options usually consist of a trunk injection at the base of the tree, most treatments (based on applicator dosage) lasts two years, and must be injected again once that time period is up. Currently Menasha has a two year rotation for its Ash trees. Menasha currently treats 58 Ash trees on odd years and 93 on even years. Due to chemical and application cost we are limited to treating only the largest and healthiest Ash trees the city has.
If you have questions contact City Arborist Dylan Wenker at (920) 967-3620.