Colorado Parks and Wildlife.
Colorado Department of Agriculture. Division of Plant Industry.
Emerald Ash Borer (EAB) was found in Boulder, CO, in September 2013. As a non-native insect, EAB lacks predators to keep it in check. EAB only attacks ash trees in the genus Fraxinus (so mountain ash are not susceptible). EAB is responsible for the death of millions of ash trees in the Midwest. Help protect Colorado's ash trees! Don't move firewood, and consider chemical treatments to protect high-value ash trees.
North Carolina Department of Agriculture and Consumer Services. Plant Industry Division. Plant Protection Section.
University of Alaska - Fairbanks. Cooperative Extension Service.
North Carolina Invasive Plant Council.
North Dakota Department of Trust Lands.
North Dakota Department of Agriculture.
Utah Department of Agriculture and Food.
North Carolina Department of Agriculture and Consumer Services.
Colorado State University. Department of Bioagricultural Sciences and Pest Management.
North Carolina State University. College of Agriculture and Life Sciences.