While EAB was first confirmed in Boulder in September of 2013, its presence has been confirmed in the City and County of Broomfield, in the City of Westminster (Adams County) and most recently in Larimer County near Berthoud. This insect has devastated ash trees in many midwestern and eastern states. The Colorado Department of Agriculture has posted information at this location. This pest infests only ash trees. Mountain ash are not ash trees; they belong to a different family of plants and do not develop infestations. Additional information will be posted as it becomes available.