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Wisconsin Invasive Species Council

Invasive Species Council Announces 2023 Invader Crusader Award Winners

  • Professional Individual: Jaime Osterom, Matthew Wallrath and Mic Armstrong
  • Volunteer Individual: Jim Giffin, Nancy Gloe and Richard “Dick” Ballou
  • Professional Group: Melinda Myers LLC and Mequon Nature Preserve
  • Volunteer Group: Friends of the Manitowoc River Watershed, Silverwood Park Volunteers and Wehr Nature Center
  • Special Recognition: Jim Hughes and Julie Fox

In 2002, state agencies joined with private partners in forming the Wisconsin Invasive Species Council as directed by s. 23.22, Wisconsin Statutes.

Council Duties

The council makes recommendations to the department regarding the following:

  • a system for classifying invasive species; and
  • a procedure for awarding cost-sharing grants to control invasive species.

The council also conducts studies of issues related to controlling invasive species. Wisconsin law requires the council to address:

  • the effect of the state’s bait industry on the introduction and spread of invasive species;
  • the effect of the state’s pet industry on the introduction and spread of invasive species;
  • the acquisition of invasive species through mail order and Internet sales; and
  • other issues as determined by the council.

The council relies on four committees to carry out its work: education, research, regulation and interagency coordination. An executive committee provides overall direction for the council’s activities.

Council Members, Committees, Initiatives and Resources

Council Members And Contact Information

Members Representing Public And Private Interests

Members Organization Contact Information
Thomas Bressner Wisconsin Agri-Business Association 608-444-1420 (c)
608-223-1111 (w)
Thomas Buechel (Chair) Buechel Horticulture Solutions, LLC 920-650-6808 (c)
Douglas Cox Menominee Indian Tribe of Wisconsin 715-853-8053
Jennifer Hauxwell, Ph.D University of Wisconsin Aquatic Sciences Center 608-263-4756
Fax: 608-262-0591
Gregory Long Needles and Leaves Nursery 262-679-1011 (w)
262-617-3284 (c)
Mark Renz University of Wisconsin-Madison Department of Agronomy 608-263-7437
Hannah Spaul The Nature Conservancy 608-316-6441 (w)

Members Representing State Agencies

Members Agency Contact Information
Drew Feldkirchner Department of Natural Resources (DNR) 608-267-5129 (desk)
Vacant Department of Tourism Vacant
Rebecca Szymkowski Department of Transportation (DOT) 608-266-9381 (desk)
Brian Kuhn Department of Agriculture, Trade and Consumer Protection (DATCP) 608-224-4590 (desk)
Lauren Leckwee Department of Administration (DOA) 608-267-2125 (desk)
Tara Bergeson Department of Natural Resources, Natural Heritage Conservation 608-438-2872 (c)
Council Initiatives And Events

Strategic Plan

“Looking forward: A statewide strategic plan for invasive species” was finalized on April 2, 2013. The plan outlines a framework of objectives to minimize invasive species' environmental and financial harm and protect human health and natural resources. This plan identifies needs that must be met cooperatively across agencies and jurisdictions. It develops cost-effective, balanced approaches to minimize invasive species' introduction into Wisconsin and carefully manage the species already established in the state.

Species Assessment Groups

The council convenes Species Assessment Groups (SAGs) to review and assess species and recommend which species should be included in Wisconsin’s Invasive Species Rule – Chapter NR 40. Specifically, SAGs are charged with recommending a regulatory (Prohibited, Restricted) or non-regulated category to the council for each considered species. The Wisconsin Invasive Species Council SAG process was last updated in December 2018.

Invader Crusader Awards

Each year, the Wisconsin Invasive Species Council honors Wisconsin citizens and organizations for their significant contribution to preventing, controlling or eradicating invasive species that harm Wisconsin’s lands, waters and wetlands. 

Check out the invader crusader award winners.

Awareness Month

June is Invasive Species Action Month (ISAM) – a time to learn, identify, report and control invasive species In Wisconsin.

June is Invasive Species Awareness Month

Wisconsin Natural Resources Magazine has published articles celebrating ISAM and efforts to slow the spread:

Check out some of the award-winning ISAM video challenge winners:

Council Committees


Education Committee
  • Charge: Seek ways to enhance outreach and education efforts in raising statewide awareness on the identification and prevention of invasive species.
  • Chair: Christa Schaefer – Department of Transportation
Executive Committee
  • Charge: Develop the council’s meeting agendas and respond to time-sensitive issues.
  • Chair: Thomas Buechel – Buechel Horticulture Solutions, LLC
Interagency Committee
  • Charge: Promote coordination among state agencies on invasive species issues and issues related to the development and implementation of Wisconsin’s Invasive Species Rule.
  • Chair: Brian Kuhn – Department of Agriculture, Trade and Consumer Protection
Regulations Committee
  • Charge: Focus on current and future rules, statutes and administrative policies to prevent the spread of and control invasive species. Make recommendations to the council to take the appropriate steps to promote uniform and consistent state regulations and policies to curtail the introduction and movement of invasive species for the protection of the environment, agriculture and human health for generations to come.
  • Chair: Gregory Long – Needles and Leaves Nursery
Research Committee
  • Charge: Convey the current knowledge base to the council as a whole; assemble and evaluate research; provide a pool of experts for communication; identify areas where the existing knowledge base is inadequate; solicit community on research needs; research components including invasive impacts, control, basic biology, avenues of introduction and prioritization of research needs.
  • Chair: Vacant
Meeting Minutes

View and download council and committee meeting minutes:




Partners, Grants and Local Ordinance Links


The council partners with several Cooperative Invasive Species Management Areas (CISMAs) across the state to manage invasive species. CISMAs are local organizations that bring together landowners and land managers to coordinate action and share resources in the fight against invasive species. Each CISMA has a defined geographical area that is distinguished by a common invasive species problem. To see a map of Wisconsin’s CISMAs and learn more about their function, visit the Invasive Plants Association of Wisconsin.

Financial Assistance

Local Ordinances

Chapter 66, Wisconsin Statutes, establishes the state’s general municipal law. Among other regulatory authorities, local units of government, town chairs, village presidents and city mayors and managers can annually require the destruction of all noxious weeds within their respective municipalities. The statute defines “noxious weed” as “Canada thistle, leafy spurge, field bindweed, any weed designated as a noxious weed by the Department of Natural Resources by rule, and any other weed the governing body of any municipality or the county board of any county by ordinance or resolution declares to be noxious within its respective boundaries” (s. 66.0407(1)(b), Wis. Stats.). The law requires that landowners destroy all noxious weeds on lands they own or control. Below is a list of some example ordinances adopted by Wisconsin municipalities. The Wisconsin Invasive Species Council recommends that local noxious weed ordinances be used to facilitate the implementation of ch. NR 40, Wis. Adm. Code, and that when designating noxious weeds emphasis to be placed on regulated invasive species as listed in NR 40. Below is a list of local ordinances regarding invasive species control around the state. To find local ordinances regarding invasive species control around the state visit Wisconsin State Library - local ordinances and codes.

Chapters 59, 60, and 61, Wis. Stats., authorize expenditures for the control of invasive species, weeds, and pests. Wisconsin Statutes also permit municipalities to impose special charges against property for current public services provided to the property including noxious weed cutting/removal. The League of Wisconsin Municipalities has prepared a manual that outlines the procedures prescribed by Wisconsin law for levying special assessments. A template for local noxious weed ordinances is available on the Legislature's website.