List of invasive plant species in Wisconsin

This list of invasive plant species in Wisconsin includes non-native plant species or strains "that become established in natural plant communities and wild areas, replacing native vegetation".^[1]

The Invasive Plants Association of Wisconsin (IPAW) is a group working to address the problems presented by invasive species in Wisconsin.^[1] In Wisconsin it is illegal to "possess, transport, transfer, or introduce certain invasive species in Wisconsin without a permit".^[2]

Species on IPAW's list of invasive plants:^[3]

• Acer platanoides – Norway maple
• Alliaria petiolata – garlic mustard
• Arctium minus – common burdock
• Berberis thunbergii – Japanese barberry
• Bromus inermis – smooth brome
• Campanula rapunculoides – creeping bellflower
• Celastrus orbiculatus – Oriental bittersweet
• Centaurea maculosa – spotted knapweed
• Cirsium arvense – Canada thistle
• Convallaria majalis – lily of the valley
• Convolvulus arvensis – field bindweed
• Crepis tectorum – hawksbeard
• Daucus carota – Queen Anne's lace
• Dipsacus laciniatus – cut-leaved teasel
• Dipsacus sylvestris – common teasel
• Elaeagnus angustifolia – Russian olive
• Elaeagnus umbellata – autumn olive
• Elytrigia repens – quackgrass
• Epipactis helleborine – helleborine orchid
• Euphorbia cyparissias – cypress spurge
• Euphorbia esula – leafy spurge
• Festuca arundinacea – tall fescue
• Glechoma hederacea – creeping Charlie
• Hemerocallis fulva – orange daylily
• Hesperis matronalis – dame's rocket
• Hieracium aurantiacum – orange hawkweed
• Hieracium caespitosum – yellow hawkweed
• Hypericum perforatum – St. John's wort
• Iris pseudacorus – yellow iris
• Leonurus cardiaca – motherwort
• Lonicera maackii – Amur honeysuckle
• Lonicera morrowii – Morrow's honeysuckle
• Lonicera tatarica – Tartarian honeysuckle
• Lonicera × bella – Bell's honeysuckle
• Lotus corniculatus – bird's-foot trefoil
• Lysimachia nummularia – moneywort
• Lythrum salicaria – purple loosestrife
• Melilotus alba – white sweet clover
• Melilotus officinalis – yellow sweet clover
• Morus alba – white mulberry
• Myosotis scorpioides – forget-me-not
• Myriophyllum spicatum – Eurasian watermilfoil
• Pastinaca sativa – wild parsnip
• Phalaris arundinacea – reed canary grass
• Phragmites australis – common reed grass
• Pinus sylvestris – Scots pine
• Poa compressa – Canada bluegrass
• Poa pratensis – Kentucky bluegrass
• Populus alba – white poplar
• Potamogeton crispus – curly-leaf pondweed
• Reynoutria japonica (syn. Polygonum cuspidatum) – Japanese knotweed
• Rhamnus cathartica – common buckthorn
• Rhamnus frangula – glossy buckthorn
• Robinia pseudoacacia – black locust
• Rosa multiflora – multiflora rose
• Rumex acetosella – sheep sorrel
• Saponaria officinalis – soapwort
• Securigera varia – crown vetch
• Solanum dulcamara – climbing nightshade
• Tanacetum vulgare – tansy
• Trifolium pratense – red clover
• Trifolium repens – white clover
• Typha angustifolia – narrow-leaved cattail
• Typha × glauca – hybrid cattail
• Ulmus pumila – Siberian elm
• Vinca minor – common periwinkle

References

1. What is an Invasive Plant? Invasive Plants Association of Wisconsin (IPAW).
2. Invasive species rule – NR 40. Wisconsin Department of Natural Resources.
3. Working List of Invasive Plants of Wisconsin. Invasive Plants Association of Wisconsin (IPAW).