Invasive Species

Non-Native Invasive Species in Forest County

TERRESTRIAL:

  • Purple Loosestrife
  • Garlic Mustard
  • Wild Parsnip
  • Common Tansy
  • Buckthorn
  • Japanese Knotweed
  • Spotted Knapweed
  • Reed Canary Grass
  • Phragmites
  • Japanese barberry
  • Emerald Ash Borer
  • Earthworms
  • Jumping Worms

AQUATIC (AIS):

  • Eurasian Milfoil
  • Yellow Floating Heart
  • Curly Leaf Pondweed
  • Rusty Crayfish
  • Zebra Mussels
  • Spiny Water Flea
Invasive Species By Lake

View this page to check lakes in your area for invasive species.

Whirling Trout Disease

Whirling Trout Disease

The Wisconsin DNR discovered a trout parasite in wild trout in southwestern Langlade County. It can lead to what’s called “whirling disease” in select species of fish....

Hemlock Woolly Adelgid

Hemlock Woolly Adelgid

Our neighbors to the East in Michigan have reported an outbreak of Hemlock Woolly Adelgid. These insects are considered invasive because they are not native to the state and can cause significant harm to Michigan’s estimated 170 million hemlock trees. As they feed,...

Ring-Necked Pheasant

Ring-Necked Pheasant

In previous articles, I talked about the Japanese beetle, an exotic invasive that is eating gardens across the Northwoods. Of course, there are many more exotic invasive plants and animals in Wisconsin including the Eurasian Watermilfoil, Common Buckthorn, Garlic...

Garlic Mustard

Conservation Corner Conservation Corner is a weekly article produced by the Forest County Land &Water Conservation Department. For more information contact Steve Kircher, County Conservationist-Land Information/GIS Director at 715-478-1387 or by e-mail at...