Chequamegon-Nicolet National Forest’s 2020 Invasive Plant Control Strategy

Contact(s): Hilary Markin

RHINELANDER, Wisconsin (May 15, 2020) – The Chequamegon-Nicolet National Forest has updated and released the Forest’s plan to control non-native plant species this year.  This year’s plan can be found on the Forest’s website by clicking on the New Invaders newsletter at

Non-native plant species can impact ecosystems by reducing tree growth and reducing food and nesting sites for wildlife. Some invasive plants such as wild parsnip even affect human health by causing blistering burns.

Forest resource specialists have completed their analyses on 346 newly detected invasive plant sites and control work is being prioritized for this season. Possible control methods include cutting, pulling, and/or herbicide application.

The highest Forest priority this year is aggressively treating oak wilt to stop it from spreading. The Forest is working on an environmental analysis to quickly treat stands of oak that have oak wilt anywhere on the National Forest. Oak wilt is a fungal disease that can be spread by beetles or from tree to tree through underground root grafts.

“Removing infected oaks along with some neighboring oaks has been a proven method of stopping the spread of oak wilt.” said Marjory Brzeskiewicz, Forest Botanist for the Chequamegon-Nicolet National Forest.  “Triclopyr herbicide, which we already have approved for use on the forest, is a valuable tool to slow the spread of oak wilt. This herbicide will be used to kill individual and groups of oak trees.”

Other higher priority species to target are those that invade forested areas and include garlic mustard, buckthorn, Japanese barberry, and Asiatic honeysuckle.

The Forest Service partnered with the University of Georgia and Wildlife Forever in 2019 and developed a mobile APP on which citizens can report non-native invasive species they find on the national forest called Wild Spotter. The program empowers the public, local communities, states, tribes, and many other groups to help the Forest Service confront threats from harmful exotic plants, animals, and pathogens that invade America’s wild places.

To learn more about the app and to find maps and information on how the forest controls invasive plants visit the forest’s Non-Native Invasive Species website at

For more information about the Chequamegon-Nicolet National Forest please visit our website at or follow us on Twitter at or like us on Facebook at


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