Emerald Ash Borer Plan

The City of Madison established an Emerald Ash Borer (EAB) Task Force in January 2008. In 2013, EAB was discovered in Madison and since its discovery, the forestry section has been following the approved City of Madison Emerald Ash Borer Plan. This plan, which is updated annually based on new research, is presented to the Common Council each year. The 2017 EAB Plan Update, was presented in January 2018. In 2017, forestry brought 945 ash trees back into treatment because of adjustments made to the 2013 plan. The latest mapshows EAB infestation and street tree removals.

Following the Plan

Protecting Ash Trees

During the spring the City implements a chemical treatment program for trees that are in healthy condition and over 10 inches diameter. The city uses injection treatments versus soil drench treatments to ensure the protection of ground and surface water quality. The latest map shows EAB treatment areas by Alder districts.

Madison Parks began an "Adopt-a-Park Tree" program for private citizens to help save, at their own expense, a publicly-owned ash tree in a Madison park. For more information, visit Adopt-a-Park Tree. An orange dot is used for ash trees scheduled for removal within in parks.

Madison Parks Forestry is replanting street trees in most locations. Tree planting occurs in April and October depending on the tree species. This process can take up to three growing seasons. If people would like to help support this undertaking, a specific fund has been created with the Madison Parks Foundation.

Removing Ash Trees

Ash trees will be removed or have been removed due to one or more of the following criteria:

  • Tree is structurally compromised or in poor condition.
  • Tree trunk measures less than 10" in diameter at 4.5 feet (dbh) from the ground.

Staff place notices on each of the affected household's doorknobs during the inspection. The tree(s) that will require removal will be marked with a yellow dot on the street side of the trunk. (Note: An orange dot is used for ash trees scheduled for removal within in parks.)

Yellow dot = Require Removal
Orange dot = Scheduled for Removal