Invasive Species I.D. and Impacts
For comprehensive identification resources for Wisconsin’s 100+ regulated terrestrial plants, visit our Wisconsin Regulated Invasive Plant Identification Resource Page on the Renz Weed Science Website!
In 2023, WIFDN completed one-page factsheets to share the impacts of invasive species.
See links below:
Invasive species in parks factsheet
Invasive species management on roadsides and rights-of-way
Explore these sections on our page below to learn about identification and impacts of several invasive species in Wisconsin:
Terrestrial Plants
| Common Name | Scientific Name | Video | Fact Sheet |
|---|---|---|---|
| Biennial thistles | – | fact sheet | |
| Bird’s-foot trefoil | Lotus corniculatus | – | fact sheet |
| Black locust | Robinia pseudoacacia | – | fact sheet |
| Black swallow-wort | Vincetoxicum nigrum | video | fact sheet |
| Buckthorns | – | fact sheet | |
| Bush honeysuckles | Lonicera sp. | video | fact sheet |
| Canada thistle | Cirsium arvense | video | fact sheet |
| Common tansy | Tanacetum vulgare | video | fact sheet |
| Creeping bellflower | Campanula rapunculoides | video | fact sheet |
| Crown vetch | Securigera varia | video | fact sheet |
| Dame’s rocket | Hesperis matronalis | video | fact sheet |
| Field bindweed | Convolvulus arvensis | – | fact sheet |
| Garden valerian | Valeriana officinalis | video | – |
| Garlic mustard | Alliaria petiolata | video | fact sheet |
| Goldencreeper | Thladiantha dubia | video | – |
| Hill mustard | Bunias orientalis | video | fact sheet |
| Japanese barberry | Berberis thunbergii | video | fact sheet |
| Japanese hedge-parsley | Torilis japonica | video | fact sheet |
| Japanese honeysuckle | Lonicera japonica | – | fact sheet |
| Japanese hop | Humulus japonicus | video | fact sheet |
| Japanese knotweed | Polygonum cuspidatum | video | fact sheet |
| Japanese stiltgrass | Microstegium vimineum | video | fact sheet |
| Leafy spurge | Euphorbia esula | video | fact sheet |
| Lesser celandine | Ranunculus ficaria | video | – |
| Multiflora rose | Rosa multiflora | – | fact sheet |
| Olives | Elaeagnus sp. | – | fact sheet |
| Oriental bittersweet | Celastrus orbiculatus | – | fact sheet |
| Perennial pepperweed | Lepidium latifolium | video | fact sheet |
| Poison hemlock | Conium maculatum | video | fact sheet |
| Privet | Ligustrum sp. | – | fact sheet |
| Purple loosestrife | Lythrum salicaria | – | fact sheet |
| Quackgrass | Elymus repens | – | fact sheet |
| Sericea lespedeza | Lespedeza cuneata | – | fact sheet |
| Smooth bedstraw | Galium mollugo | video | – |
| Spiny plumeless thistle | Carduus acanthoides | video | fact sheet |
| Spotted knapweed | Centaurea stoebe | video | fact sheet |
| Sweetclovers | Melolitus sp. | – | fact sheet |
| Teasels | Dipsacus sp. | video | fact sheet |
| Tree-of-heaven | Ailanthus altissima | video | fact sheet |
| Wild chervil | Anthriscus sylvestris | video | fact sheet |
| Wild parsnip | Pastinaca sativa | video | fact 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 Disease | Video | Fact Sheet |
|---|---|---|
| Aster yellows | video | fact sheet |
| Boxwood blight | video | – |
| Dutch elm disease | video | fact sheet |
| Impatiens downy mildew | video | fact sheet |
| Late blight | – | fact sheet |
| Powdery mildews | video | fact sheet |
| Southern blight | video | fact sheet |
| Tar spot | video | fact sheet |
| Thousand cankers disease | video | fact sheet |
| Tobacco mosaic | video | – |
| Tobacco rattle | video | fact sheet |
| Tomato chlorotic dwarf | video | – |
| Verticillium wilt | video | fact sheet |
Impacts of late blight
New and priority plant diseases
Animals
Terrestrial Animals
New and priority invasive insects
Brown Marmorated Stinkbug in Wisconsin: video
Purple Carrot Seed Moth: video
Emerald Ash Borer (Agrilus planipennis)
- How to identify emerald ash borer: video
- How to identify ash trees: video
- How to detect emerald ash borer: video
- Impacts of emerald ash borer: video
- Emerald ash borer management: video
- Should I treat my ash tree for emerald ash borer?
- Homeowner guide to emerald ash borer insecticide treatments
- Professional guide to emerald ash borer insecticide treatments
- Research: Forest response to emerald ash borer: video
Gypsy Moth
- Impacts and history of gypsy moth in Wisconsin: video
Jumping Worm (Amynthas sp.)
- Impacts of jumping worms: video
- What’s the trouble with worms?
- WI DNR jumping worm page
- Wisconsin Natural Resources magazine jumping worm article
- Jumping worm I.D. and best management practices brochure
Feral Pigs (Sus scrofa)
- Impacts of feral pigs
Aquatic Animals
New and priority aquatic fish and invertebrates
Spiny water flea economics: video
Impacts of Sea Lamprey in the Great Lakes
Impacts of Invasive Species
Invasive species as drivers and passengers of ecological change: video
Causes and consequences of exotic plant invasions
