Emerald Ash Borer (EAB) is a small (0.5” long) metallic green insect that is killing ash trees in the United States. This insect is originally from Asia and ash trees native to North America have no natural resistance to the EAB which causes 100% mortality of ash trees in areas where the insect is present. EAB has been detected in many Mid Atlantic and Midwestern States and has caused widespread mortality in all species of ash. It has recently been detected in Pennsylvania and parts of New York State (Western NY, Hudson Valley, Syracuse, Rochester and Bath). Programs to slow the spread of the insect are in place in New York State but complete eradication of the insect is not considered a viable reality. The spread of the insect to Ithaca is inevitable. If no action is taken to manage the Ash trees in the City of Ithaca the insect will kill every ash tree.
Parks & Forestry staff in conjunction with the Shade Tree Advisory Committee has developed a plan to address the inevitable infestation of EAB. The plan includes removing & replacing some ash trees as well as saving some ash trees with use of a protective pesticide treatment. Trees that will be removed and replaced are ones that are in poor condition, have had severe utility pruning or are smaller than 8” in trunk diameter.