Invasive Species I.D. and Impacts

Impacts of Invasive Species:

In 2023, WIFDN completed one-page factsheets to share the impacts of invasive species.

Identification of Invasive species:

Click on the links below to zoom to tables on this page to learn about identification and impacts of many invasive species in Wisconsin:

OR, For comprehensive identification resources by ID traits for Wisconsin’s 100+ regulated terrestrial plants, visit our Wisconsin Regulated Invasive Plant Identification Resource Page on sister page, the Renz Weed Science Website!

Terrestrial Plants

Common Name Scientific NameVideoFact Sheet
Biennial thistles fact sheet
Bird’s-foot trefoilLotus corniculatusfact sheet
Black locustRobinia pseudoacaciafact sheet
Black swallow-wortVincetoxicum nigrumvideofact sheet
Buckthorns fact sheet
Bush honeysucklesLonicera sp.videofact sheet
Canada thistleCirsium arvensevideofact sheet
Common tansyTanacetum vulgarevideofact sheet
Creeping bellflowerCampanula rapunculoidesvideofact sheet
Crown vetchSecurigera variavideofact sheet
Dame’s rocketHesperis matronalisvideofact sheet
Field bindweedConvolvulus arvensisfact sheet
Garden valerianValeriana officinalisvideo
Garlic mustardAlliaria petiolatavideofact sheet
GoldencreeperThladiantha dubiavideo
Hill mustardBunias orientalisvideofact sheet
Japanese barberryBerberis thunbergiivideofact sheet
Japanese hedge-parsleyTorilis japonicavideofact sheet
Japanese honeysuckleLonicera japonicafact sheet
Japanese hopHumulus japonicusvideofact sheet
Japanese knotweedPolygonum cuspidatumvideofact sheet
Japanese stiltgrassMicrostegium vimineumvideofact sheet
Leafy spurgeEuphorbia esulavideofact sheet
Lesser celandineRanunculus ficariavideo
Multiflora roseRosa multiflorafact sheet
OlivesElaeagnus sp.fact sheet
Oriental bittersweetCelastrus orbiculatusfact sheet
Perennial pepperweedLepidium latifoliumvideofact sheet
Poison hemlockConium maculatumvideofact sheet
PrivetLigustrum sp.fact sheet
Purple loosestrifeLythrum salicariafact sheet
QuackgrassElymus repensfact sheet
Sericea lespedezaLespedeza cuneatafact sheet
Smooth bedstrawGalium mollugovideo
Spiny plumeless thistleCarduus acanthoidesvideofact sheet
Spotted knapweedCentaurea stoebevideofact sheet
SweetcloversMelolitus sp.fact sheet
TeaselsDipsacus sp.videofact sheet
Tree-of-heavenAilanthus altissimavideofact sheet
Wild chervilAnthriscus sylvestrisvideofact sheet
Wild parsnipPastinaca sativavideofact sheet

Phragmites management in Wisconsin
Callery (Bradford) Pear
Biocontrol of purple loosestrife
Eradication of common barberry in Wisconsin
Using native plants in your home garden
Impacts of bush honeysuckles
New and priority terrestrial plants

Aquatic Plants

Invasive Aquatic Plants Introduction: video
Water Hyacinth (Eichhornia crassipes), Water Lettuce (Pistia stratiotes), & Parrot Feather (Myriophyllum aquaticum): video
Eurasian Watermilfoil (Myriophyllum spicatum): video
Starry Stonewort (Nitellopsis obtusa): video
New and priority aquatic plants

Plant Diseases

Plant diseases that are impacting or have the potential to impact natural areas and native vegetation:

Plant DiseaseVideoFact Sheet
Aster yellowsvideofact sheet
Boxwood blightvideo
Dutch elm diseasevideofact sheet
Impatiens downy mildewvideofact sheet
Late blightfact sheet
Powdery mildewsvideofact sheet
Southern blightvideofact sheet
Tar spotvideofact sheet
Thousand cankers diseasevideofact sheet
Tobacco mosaicvideo
Tobacco rattlevideofact sheet
Tomato chlorotic dwarfvideo
Verticillium wiltvideofact sheet

Impacts of late blight
New and priority plant diseases


Terrestrial Animals

New and priority invasive insects

Brown Marmorated Stinkbug in Wisconsin: video

Purple Carrot Seed Moth: video

Emerald Ash Borer (Agrilus planipennis)

Gypsy Moth

  • Impacts and history of gypsy moth in Wisconsin: video

Jumping Worm (Amynthas sp.)

Feral Pigs (Sus scrofa)

Aquatic Animals

New and priority aquatic fish and invertebrates
Spiny water flea economics: video
Impacts of Sea Lamprey in the Great Lakes

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