Emerald Ash Borer in Ottawa in 2026: Should You Treat or Remove Your Ash Tree?
If you have an ash tree on your Ottawa property, Emerald Ash Borer (EAB) is still a serious concern in 2026. The invasive beetle has already caused extensive damage to Ottawa’s ash population, and the City continues to manage affected trees through treatment, removal, and replacement programs. For homeowners, the biggest question is no longer simply “Does my ash tree have Emerald Ash Borer?” It is: “Is my ash tree healthy enough to treat, or has it reached the point where removal is the safer choice?” The answer depends on the condition of the tree, the severity of the infestation, its location, and the potential risk to your home and property. What Is Emerald Ash Borer? Emerald Ash Borer is an invasive beetle that attacks ash trees. The larvae feed beneath the bark and damage the tissues responsible for transporting water and nutrients throughout the tree. As the infestation progresses, an ash tree can lose canopy density, develop dead branches, and eventually become struc...