The Wisconsin Department of Natural Resources and the
Wisconsin State Herbarium have announced a new initiative.
Wisconsin Invasive Plants Reporting and Prevention Project
Prevent the spread of plants known to be newly invasive in Wisconsin or in nearby states.
Identify these population and control or destroy them before they can spread.
We hope the information presented here will assist in this effort.
Invasive Plants of the Future
Upland (all links open new window), [WI] = already in Wisconsin
|Wisconsin detail page OR Google Information Search||Google Image Search||Click for interactive detail map|
|Common Teasel (Dipsacus fullonum subsp. sylvestris) [WI]|
|Cut-leaved Teasel (Dipsacus laciniatus) [WI]|
|Giant Hogweed (Heracleum mantegazzianum)|
|Japanese Hops (Humulus japonicus) [WI]|
|Japanese Stilt Grass (Microstegium vimineum)|
|Wineberry or Wine Raspberry (Rubus phoenicolasius)|
|Japanese Hedge Parsley (Torilis japonica) [WI]|
|Spreading Hedge Parsley (Torilis arvensis)|
|Black Swallow-wort (Vincetoxicum nigrum) [WI]|
|Pale Swallow-wort (Cynanchum rossicum)|
Aquatic / Wetland (all links open new window)
|Click for Wisconsin detail page OR Google Information Search (offsite)||Google Image Search (offsite)||Click for interactive detail map|
|Flowering Rush (Butomus umbellatus) [WI]|
|European Marsh Thistle (Cirsium palustre) [WI]|
|Hydrilla (Hydrilla verticillata)|
|European Frog-Bit (Hydrocharis morsus-ranae)|
|Water Chestnut (Trapa natans)|
You Can Help
If you suspect that you have found one of these plants;
1. Collect a good specimen (fresh or pressed) and/or take
photos, and report its location as precisely as you can.
See Collecting & Reporting Guidelines (new window)
2. Fill out a Reporting Form (new window) (pdf -Adobe® Reader®). Send your information to the Wisconsin State Herbarium, WIS-DNR, Freckmann Herbarium, or any other qualified institution.
3. Contact person: Courtney LeClair
If you are certain of the identification, make your report then destroy the population or at least prevent plants from producing fruits or seeds. As with most invasives, the residue seeds from years before will probably remain so the site will need to be checked in subsequent years. Contact a local land manager or the project coordinator if you need assistance to control the population,. Be sure you report your findings and actions so a record can be keep track of all these invasives.
Wisconsin Invasive Species (new window)
Wisconsin Invasive Plants Reporting & Prevention Project
Invasive Plant Education, Early Detection, and Mapping Specialist
WI Department of Natural Resources
101 S. Webster St.
Madison, WI 53707-7921
Phone: (608) 267-7438
Website: http://dnr.wi.gov/invasives/futureplants/reporting.htm (new window)