The Kansas Forest Service has confirmed the presence of the emerald ash borer in Marshall County, the fourth Kansas county confirmed this year and 19th since the first discovery in Wyandotte County in 2012.
KFS officials said a live larva was collected from an EAB trap tree that had been installed earlier this year just north of Marysville, within the city’s local brush dump. Forest Health Coordinator Shad Hufnagel said the state’s forest service “recognizes the importance of early detection and proactively installs trap (or detection) trees in strategic locations to help identify if local populations of the insect are present.”
He added trap trees are often placed adjacent to counties with known EAB infestations, in areas with a high density of ash trees, and in locations where brush and firewood are frequently moved. In 2025, 15 trap trees were installed covering 11 counties.
PHOTO: One dead emerald ash borer adult was found in Bourbon County on July 28. Officials say at least one adult must be found to confirm detection of emerald ash borer. (K-State Research and Extension)
