Invasive Plant Identification

Help us to learn about the emergence of invasive species!  If you find them in your yard or neighborhood, send a photo and location or GPS point to:  Jane Anklam, Agriculture/Horticulture Educator, UW-Extension, Douglas County at  Or post it to our Facebook page at .

You can also visit the University of Wisconsin Weed Science website at  for more information about invasive plants

Invasive Plants Flyer

Invasive Plants in Our Area:

Black Locust

Black Locust Fact Sheet


Crown Vetch

Crown Vetch ID

Crown Vetch Location Points





Crown Vetch Location Points


Leafy Spurge

Leafy Spurge ID

Poison Hemlock

Poison hemlock (Conium maculatum) is currently flowering in Southern parts of Wisconsin, and soon, if not already, in the Northern regions. We are currently aware of its presence in Dane, Green, Lafayette, Iowa, Grant, Walworth, and Crawford counties, with isolated reports scattered around the state (Jackson, Price, Milwaukee counties, among others).


Wild Chervil ID


Callery Pear

Japanese Hedge Parsley

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