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 spreads quickly through rich hardwood forests. Volunteers can help hand-pull garlic mustard in the spring! Read
Giant, Japanese, and Bohemian Knotweeds were planted in yards throughout the region. Read more on basic identification and the
NCWMA Knotweed Project.
Watch out for wild parsnip! This invasive species can cause severe blisters when sap on skin is exposed to light. Read
Giant in every way! The sap is toxic to skin. This species is rare in our area. Learn how to identify
Exotic buckthorns, honeysuckles and Japanese barberry are ornamental bushes that invade forests. Learn more.
Cut-leaf and common teasels are uncommon in the area. The NCWMA would like to eradicate all sites. Learn more.
Invasive Phragmites (common reed) takes over wetlands. Learn more
Purple loosestrife is pretty, but invasive in wetlands throughout the area. Learn more.
Garden valerian has become very common along roads and fields in Douglas and Bayfield County. Learn
Yellow flag iris is taking over shorelines of lakes and rivers. Learn more!
This species is poisonous to cattle and takes over fields. Its deep roots make it difficult to control. Learn
This is a wetland thistle spreading from NE Wisconsin. Learn more.
Garlic Mustard in the NCWMA
Click here to see more photos!
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