Emerald Ash Borer

Emerald Ash Borer Infographic

Cause of Death to Trees


The adult emerald ash borer emerges in May-July and the female lays numerous eggs in bark crevices and between layers of bark. The eggs hatch in 7-10 days and larvae bore into the tree where they chew the inner bark and phloem creating serpentine galleries as they feed. This cuts off the flow of water and nutrients in the tree, causing dieback and eventual death of the tree.

For More Information


Additional Emerald Ash Borer Information Websites include the following:
The Village of Riverside using Geographic Information System (GIS) has identified and mapped ash tree locations on public land. To see the impact this pest could have on parks and parkways in your neighborhood take a look at the Public Ash Tree Inventory page.