Keeping Boston's Ash Trees Strong

Boston's Urban Forestry Division will treat 1,505 ash trees this year to protect them from the Emerald Ash Borer, an invasive species threatening urban forestry. The treatment involves injecting a protective solution that needs to be reapplied biennially, aligning with the recommendations of the Urban Forest Plan. Todd Mistor, the City’s Director of Urban Forestry, likens tree care to a training regimen, emphasizing the need for planning and repetition. City Arborists evaluated the health of ash trees, determining which are viable candidates for treatment. Trees in poor condition will continue to be monitored to mitigate safety risks.

This initiative aims to sustain the health of mature trees and enhance the tree canopy across Boston. The Urban Forestry Division began implementing this treatment in 2023. Residents are encouraged to check the City’s Tree Inventory map for ash trees along their jogging routes.