Emerald Ash Borer Management Strategies Outlined for Communities

Morrison County officials are taking proactive steps to combat the spread of the Emerald Ash Borer (EAB) during an informational meeting held on December 13, 2023. The meeting focused on best management practices for dealing with this invasive insect, which poses a significant threat to ash trees in the region.

Key recommendations from the meeting emphasized the importance of timing when managing ash trees. Residents and communities are urged to avoid trimming or removing ash trees from May 1 to September 30, the active flight period of the adult beetle. This precaution is crucial as the beetles often reinfest the same tree or nearby trees, accelerating the spread of the pest. Instead, tree removals should be conducted during the dormant season, allowing for the destruction of infested material before the next flight season begins.

Participants discussed two primary strategies for managing EAB: tree removals and insecticide treatments. Communities are encouraged to begin removing ash trees in poor condition before EAB is detected locally. Monitoring programs can help identify trees showing signs of infestation, such as woodpecker damage, which should also be removed during winter months.

Insecticide treatments were highlighted as a viable option for protecting healthy ash trees. Treatments can be preventative or therapeutic, with the effectiveness depending on the tree's health and the timing of application. Homeowners are advised to consult a licensed arborist for larger trees to ensure proper treatment and avoid wasting resources.

The meeting also underscored the importance of maintaining an ash inventory within communities. Understanding the number and condition of ash trees can help prioritize management efforts and slow the rate of tree removals, preventing a sudden influx of dead trees that could pose hazards.

As Morrison County moves forward, the focus remains on educating residents about the EAB threat and implementing effective management strategies to protect the region's ash tree population. The community's proactive approach aims to mitigate the impact of this invasive species and preserve the ecological and aesthetic benefits that healthy ash trees provide.