EMERALD ASH BORER

February 1, 2024

The Emerald Ash Borer (Agrilus planipennis or EAB) is a green exotic beetle native to north-eastern Asia that feeds on ash tree (Fraxinus) species. The adult beetles nibble on ash foliage but, cause little damage. The larvae, however, feed on the inner bark of ash trees, disrupting the tree’s ability to transport water and nutrients. This is detrimental to the trees health. EAB was discovered in the states around 2002 and seen in CT in the summer of 2012. Since then, EAB has destroyed hundreds of thousands of ash trees in the state. It has become such a problem that the state of Connecticut has put in place many contingencies to prevent the spread of infestation such as limiting firewood sales across different areas and the release of parasitic wasps to combat the beetle. Even after these efforts, the majority of Ash trees in CT are already dead or dying. There are treatments for uninfected ash trees and those that have just started getting infected. However, depending on how many ash trees you have on your property and their conditions, often times preventative removal is the best option.

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