Importance of treating EAB in Boulder County

Ash trees are a valuable part of the landscape in Boulder County, providing shade, wildlife habitat, and environmental benefits throughout neighborhoods and parks. However, these trees face a serious threat from the emerald ash borer (EAB), an invasive insect that has caused widespread damage to ash trees across North America. Because of this pest, treatment and proactive management have become essential for protecting many of the ash trees that remain in the county.

The emerald ash borer is a small metallic-green beetle whose larvae live beneath the bark of ash trees. As the larvae feed, they create tunnels in the inner bark that block the movement of water and nutrients throughout the tree. Over time, this damage weakens the tree and eventually leads to its death. In most cases, untreated ash trees die within two to four years after becoming infested.

Boulder County was the first place in Colorado where emerald ash borer was detected, and the insect continues to threaten ash populations throughout the area. Millions of ash trees across North America have already been lost to this pest, and ash trees make up a significant portion of urban forests in many Colorado communities.  Without treatment, most ash trees will eventually become infested and die, which could dramatically reduce the tree canopy in neighborhoods and public spaces.

For homeowners and property managers in Boulder County, identifying ash trees and considering treatment options is an important step in protecting the local landscape. With proactive care and professional management, many ash trees can continue to thrive despite the ongoing threat of emerald ash borer.