Ash Trees: To Treat Or Not To Treat

The Canadian Forest Service a branch of Natural Resources Canada have developed an invaluable tool for homeowners, tree professionals and communities. This tool (model) will aid in evaluating the pros and cons of treating or removing an ash tree (with many options to include in the automatic calculator).

This site provides access to a model that was developed to assist users in deciding the fate of ash trees (Fraxinus spp.) threatened by the arrival of emerald ash borer (Agrilus planipennis Fairmaire) in North America. Basically, the model tracks the ongoing costs of treating a tree with an insecticide versus the one-time costs associated with removing and replacing it. Optionally, users can include other, extended benefits and costs in the model that have been attributed to urban trees, including: property value premiums, energy savings, runoff and pollution benefits, and ongoing maintenance costs.