Emerald Ash Borer
Emerald ash borer (EAB), Agrilus planipennis Fairmaire, is an exotic beetle that was discovered in southeastern Michigan near Detroit in the summer of 2002. The adult beetles nibble on ash foliage but cause little damage. The larvae (the immature stage) feed on the inner bark of ash trees, disrupting the tree's ability to transport water and nutrients. Emerald ash borer probably arrived in the United States on solid wood packing material carried in cargo ships or airplanes originating in its native Asia. Emerald ash borer is also established in Windsor, Ontario, was found in Ohio in 2003, northern Indiana in 2004, northern Illinois and Maryland in 2006, western Pennsylvania and West Virginia in 2007, Wisconsin, Missouri and Virginia in the summer of 2008, Minnesota, New York, Kentucky in the spring of 2009, Iowa in the spring of 2010, Tennessee in the summer of 2010, Connecticut, Kansas, and Massachusetts in the summer of 2012, New Hampshire in the spring of 2013, North Carolina and Georgia in the summer of 2013, Colorado in the fall of 2013, New Jersey in the spring of 2014, Arkansas in the summer of 2014, Louisiana in the winter of 2015, Texas in the spring of 2016, and Nebraska in the summer of 2016. Since its discovery, EAB has:
- Killed hundreds of millions of ash trees in North America.
- Caused regulatory agencies and the USDA to enforce quarantines and fines to prevent potentially infested ash trees, logs or hardwood firewood from moving out of areas where EAB occurs.
- Cost municipalities, property owners, nursery operators and forest products industries hundreds of millions of dollars.
Initial county EAB detections in North America
As of July 1, 2016
Click to enlarge
Changes/additions included since the June 1, 2016 map are as follows: Initial state detection in Douglas County, NE. The addition of initial county detections in: Louisa County, IA; Breathitt, Clay, Elliott, Estill, Jackson, Knott, Knox, LaRue, Lee, Leslie, Letcher, Magoffin, Marion, Menifee, Morgan, Owsley, Perry and Wolfe Counties, KY; Clinton, Dent, Ray and Ste. Genevieve Counties, MO; Cass County, NE; Philadelphia County, PA; Tazewell and Wise Counties, VA; Barbour County, WV; and Juneau County, WI. Added to the list of counties quarantined by their state: Cass, Dodge, Douglas, Sarpy and Washington Counties, NE.
Insecticide Options for Protecting Ash Trees
June 2014 - Second Edition
Many homeowners, arborists and tree care professionals want to protect valuable ash trees from EAB. Scientists have learned much about this insect and methods to protect ash trees since 2002. This bulletin is designed to answer frequently asked questions and provide the most current information on insecticide options for controlling EAB.
Coalition for Urban Ash Tree Conservation EAB Management Statement
This document is an endorsement for ash tree conservation as part of integrated approach to managing emerald ash borer in urban areas, and is supported by university scientists with expertise in EAB management, commercial arborists, municipal foresters, public works officials, and non-governmental organizations (NGOs).