EAB is a destructive insect pest of ash trees. Important changes to the regulation of Emerald Ash Borer in the state of Wisconsin have recently taken place. As of March 30, 2018 Wisconsin will be under a statewide quarantine for EAB. For more information about this recent development, visit the WI DNR's EAB website.
Oak wilt was discovered in Bayfield County in 2018. This is a devastating fungal disease that kills trees in the red oak group (red, black, and northern pin oaks) and also harms trees in the white oak group (white, bur, and swamp white oaks).
Below are two documents regarding oak wilt specifically in Bayfield County.
NORTHWOODS COOPERATIVE WEED MANAGEMENT AREA (NCWMA)
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.
See what tools are available to you in the NCWMA toolshed, work on plant identification, and learn about what is happening on a local level to combat the spread of terrestrial and aquatic invasive species on the NCWMA website.