• Once sold for horticultural plantings, Bush honeysuckles have become invasive
    Slide #1
  • Sharon Utegaard (center) receiving an award on behalf of her husband, Rolf, at IPAW's 2018 Annual Meeting
    Slide #2
  • Dames Rocket (flowers have four petals) is often mistaken for native woodland phlox
    Slide #3
  • At this point, Garlic Mustard can produce viable seed after it has been pulled
    Slide #4
  • The IPAW booth at the Wisconsin Wetland's Association meeting in 2016
    Slide #5
  • Dense stands of Black Locust shade out important native vegetation
    Slide #6

Upcoming Events


Field Day 9 am-3 pm, Barron Co Government Center, 335 E Monroe, Barron, WI 54812 Click here for more.


Invasive Species Action Month - Do something to help combat invasive species!


Wisconsin Invasive Species Council's Invader Crusader Award Ceremony Olbrich Gardens, Madison, WI; 1:00 pm

2018 Field Days

Other Invasive-Related Events

Welcome to Our Website

IPAW logo"Slowly, but persistently, making their way across the land, ecologically invasive plants are the silent invaders of our time" quoted from Elizabeth J. Czarapata's book Invasive Plants of the Upper Midwest. Most of us don't even know they exist. We have the illusion of lush, green landscapes, when in fact, much of what we see are invasive plant species. In reality, invasive species have contributed directly to the decline of 49% of threatened or endangered species in the United States. The annual cost to the United States economy is estimated at $138 billion a year, with over 100 million acres suffering from invasive plant infestations. Because there is a need for a greater understanding, it is IPAW's mission "to promote better stewardship of the Natural Resources of Wisconsin by advancing the understanding of invasive plants, preventing their introduction, and encouraging the control of their spread."

We invite you to take a look at our website, and we hope to persuade you about the importance of controlling invasive plant species in Wisconsin... or wherever you may live.

New Threats to Wisconsin

Besides these, you can learn about more New Threats in our newsletter

Japanese stilt grass
Japanese stilt grass

It's almost here! Japanese stilt grass is currently found in Illinois, less than 15 miles from the Wisconsin border.

Porcelain berry
Porcelain berry

A climbing vine in the grape family, first introduced as an ornamental landscape plant from temperate Asia.

Japanese hedge parsley
Japanese hedgeparsley

A member of the carrot family, this species is rapidly spreading and has the potential to invade to most regions of the state.


Our Mission

"To promote better stewardship of the natural resources of Wisconsin by advancing the understanding of invasive plants, preventing their introduction, and encouraging the control of their spread."

Contact Us

PO Box 5274
Madison, WI 53705-0274
Copyright (c) 2018 Invasive Plants Association of Wisconsin Terms Of Use Privacy Statement