Northwoods Cooperative Weed Management Area
Northwoods Cooperative Weed Management Area

Working Together to Protect

Northern Wisconsin from Invasive Species

The Northwoods Cooperative Weed Management Area (NCWMA) is a collective group of state and federal agencies, municipalities, tribes, nonprofits, community organizations, and individuals who have come together to combat invasive species in Douglas, Bayfield, Ashland, and Iron counties in northern Wisconsin.


The Northwoods Cooperative Weed Management Area provides a forum to share information and resources, collaborate on planning, and cooperate on invasive species management in northern Wisconsin.  Learn more about us and check out our upcoming events!

The NCWMA and Bayfield County AIS Project are Hiring!

The NCWMA and Bayfield County AIS Project is looking for seasonal staff to help with running the portable boat wash at boat launches. These workers will also work with the Bayfield County AIS Program on Clean Boats Clean Waters (CBCW) outreach, education and watercraft inspections at boat landings. Interested parties for all of these positions should apply to the "Clean Boats Clean Waters Assistant" through the Bayfield County Website:

NCWMA 2018 Annual Report

The NCWMA had many accomplishments in 2018.  Please check out the 2018 Annual Report for more information. 


Here is a short summary of the year:  The NCWMA was awarded a little less than $67,000 in new funding.   Ramona Shackleford, the Coordinator of the NCWMA, organized and helped with hand-pulling events at six different garlic mustard sites over twelve days.  Ramona assisted in treating 43 sites of knotweed species, and visited 110 sites of knotweed including eighteen newly documented sites in the region.  Ramona recorded information on knotweed sites such as their size, proximity to water, and proximity to forests.  This information was used in the poster that was presented at the Upper Midwest Invasive Species Conference.  Ramona took the NCWMA informational booth to ten events throughout the year and presented information on invasive species at eleven events.

High Priority Invasive Species in the NCWMA

Below are a few high priority invasive species of the NCWMA.  Click this link for information on these and other high priority invasive species in our region.

Garlic Mustard

Garlic Mustard spreads quickly through rich hardwood forests.  Volunteers can help hand-pull garlic mustard in the spring! Read more!


Giant, Japanese, and Bohemian Knotweeds were planted in yards throughout the region.   Read more on basic identification and the NCWMA Knotweed Project.

Wild Parsnip

Watch out for wild parsnip!  This invasive species can cause severe blisters when sap on skin is exposed to light.  Read more!

Giant Hogweed

Giant in every way!  The sap is toxic to skin.  This species is rare in our area.  Learn how to identify it.

Invasive Bushes

Exotic buckthorns, honeysuckles and Japanese barberry are ornamental bushes that invade forests.  Learn more.


Cut-leaf and common teasels are rare in the area.  The NCWMA would like to eradicate all sites.  Learn more.


Invasive Phragmites (common reed) takes over wetlands. Learn more

Purple Loosestrife

Purple loosestrife is pretty, but invasive in wetlands throughout the area. Learn more.

Range of the Northwoods Cooperative Weed Management Area

The Northwoods CWMA includes the four counties that border Lake Superior in Wisconsin:  Ashland, Bayfield, Douglas, and Iron Counties.  Here is a map of this area.

Check out the NCWMA August 2018 Newsletter!

NCWMA August 2018 Newsletter


NCWMA Brochure

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