The Emerald Ash Borer is an invasive species of beetle that has begun to spread into Kansas over the last year. It has killed tens of millions of ash trees in other states, and may have the same devastating effect in Kansas. The annual cycle of the beetle dictates that it will begin emerging as early as mid May, and Ash Borer activity will peak in June.  A few easy tips to remember:  When using insecticides to protect from the Emerald Ash Borer: Inject whenever possible; If you have to spray make sure to follow correct application rates; If you must spray then avoid spraying close to waterways, or storm drains, and avoid spraying prior to rain events. For more information please visit:
Kansas Department of Agriculture - http://www.ksda.gov/plant_protection/content/379; Kansas Forest Service - https://www.kansasforests.org/programs/health/eab.shtml; OR http://www.emeraldashborer.info/