EAB Management in Lakeville

What Is the City of Lakeville Doing to Manage EAB?""

In 2017, the City conducted a tree inventory of over 15,000 trees on public and private property to determine the percentage of ash trees and other tree species. With this information, the Forestry Division assessed the impact EAB could have on the City as well as other future pests. After EAB was discovered in Lakeville, the City adopted an Emerald Ash Borer Management Plan (PDF) to provide next steps for minimizing the impact of EAB in an orderly and effective manner. The City Council then passed a Shade Tree Epidemic Pest Control Ordinance and Policies in 2018, to mitigate effects of epidemic-level tree pests and diseases.

City-owned ash trees along right-of-way (ROW) street boulevards and in parks are being managed using a combination of activities including inspections and monitoring for the pest, preservation by injection, infested tree removal and proactive phased tree and stump removals in order to manage EAB. Replanting will occur in park areas and select ROW corridors only.

In order to preserve established trees that contribute to the community’s canopy, the City injects ash trees in parks and ROW. Ash trees that are in good/fair condition that are greater than 10 inches in stem diameter are the prime candidates for injection.

Check the City’s interactive Ash Tree Injection map to see if your boulevard tree is planned for protection. Zoom in for more detail or click on the globe icon to enter an address. Each red dot indicates that tree has been injected or is planned for injection. If you think you have an ash in the boulevard that merits protection, call 952-985-2726.

The City offers an Ash Tree Injection Program to the public. This program provides a discounted rate to residents to treat private property ash trees by a City contractor.

The City also offers free ash tree inspections on private property. You can request an inspection in your yard if you see signs of EAB and want it confirmed or a second opinion on treatment. You can also report infested trees on public property such as parks and natural areas. Treatment inspections are typically conducted June through August to help determine a tree’s condition if it is already infested. If the tree appears healthy, the City’s ash injection contractor usually performs the inspection prior to providing an estimate.

Ash trees that aren’t being injected and preserved will eventually be removed. Removals are being done in phases to spread out the environmental and financial impact of this pest. Beginning in 2019, select City-owned ash trees in the ROW and in parks will be marked for removal with orange painted rings. These trees will be removed between October 2019 and April 2020 when the adult beetles are not active and the risk of spreading the pest is limited. Stumps will be ground out by the end of the spring of 2020.

Each winter, the City Forestry staff will inspect ash trees in Lakeville and mark infested trees for removal on public and private property, ideally before they are hazardous. 

The Forestry Division can be reached at 952-985-2724.