Terrestrial invasives come in many forms including plants, animals, insects, fungi and diseases. They affect the health of our forests, prairies, parks, urban landscapes and more. When these landscapes are unhealthy, all the benefits they provide to us are at risk. The good news is, each one of us can make a difference. Learn what to look for, and you can help slow the spread of invasive species!
View a printable list of all species regulated by NR 40 [PDF] or a list of plants only [PDF].
Click on the buttons below to see what species are invasive in Wisconsin.
The buttons separate invasive plants and animals into regulated or non-regulated categories. Regulated species currently have legal restrictions under the Invasive Species Rule, Chapter NR 40. Non-regulated species currently are not regulated by Chapter NR 40. View our terminology page for classification definitions.
Plants Regulated Non-regulated
Animals Regulated Non-regulated
| Classification | Common name | Scientific name | Factsheet | Photo gallery |
Lit. review |
SAG form |
NR40 Listing Date |
|---|---|---|---|---|---|---|---|
| Prohibited | Amur cork tree | Phellodendron amurense |  |
 |
|
5/1/2015 | |
| Prohibited | Asian loeseneri bittersweet | Celastrus loeseneri | |
|
5/1/2015 | ||
| Prohibited | Bohemian knotweed | Fallopia x bohemicum or F. x bohemica or Polygonum × bohemicum | |
|
5/1/2015 | ||
| Prohibited | Butterfly dock | Petasites hybridus | |
|
|
5/1/2015 | |
| Prohibited | Chinese wisteria | Wisteria sinensis | |
|
|
5/1/2015 | |
| Prohibited | Chinese yam | Dioscorea batatas or Dioscorea polystacha | |
|
|
5/1/2015 | |
| Prohibited | Colt's foot | Tussilago farfara | |
|
|
5/1/2015 | |
| Prohibited | Common barberry | Berberis vulgaris | |
|
5/1/2015 | ||
| Prohibited | Diffuse knapweed | Centaurea diffusa | |
|
|
5/1/2015 | |
| Prohibited | Fiveleaf akebia or Chocolate vine | Akebia quinata | |
|
|
5/1/2015 | |
| Prohibited | Giant hogweed | Heracleum mantegazzianum | |
|
|
|
9/1/2009 |
| Prohibited | Giant knotweed | Fallopia sachalinensis or Polygonum sachalinense | |
|
|
|
9/1/2009 |
| Prohibited | Grecian foxglove | Digitalis lanata | |
|
|
5/1/2015 | |
| Prohibited | Himalayan blackberry | Rubus armeniacus | |
|
5/1/2015 | ||
| Prohibited | Indian yam | Dioscorea oppositifolia | |
|
|
9/1/2009 | |
| Prohibited | Japanese chaff flower | Achyranthes japonica | |
|
|
5/1/2015 | |
| Prohibited | Japanese honeysuckle | Lonicera japonica | |
|
|
|
9/1/2009 |
| Prohibited | Japanese stilt grass | Microstegium vimineum | |
|
|
|
9/1/2009 |
| Prohibited | Japanese wisteria | Wisteria floribunda | |
|
|
5/1/2015 | |
| Prohibited | Johnsongrass | Sorghum halepense | |
|
|
5/1/2015 | |
| Prohibited | Kudzu | Pueraria montana or P. lobata | |
|
|
|
9/1/2009 |
| Prohibited | Lesser celandine | Ranunculus ficaria | |
|
|
5/1/2015 | |
| Prohibited | Medusahead | Taeniatherum caput-medusae | |
|
|
5/1/2015 | |
| Prohibited | Mile−a−minute vine | Polygonum perfoliatum or Persicaria perfoliata | |
|
|
|
9/1/2009 |
| Prohibited | Narrow leaf bittercress | Cardamine impatiens | |
|
|
5/1/2015 | |
| Prohibited | Pale or European swallow−wort | Vincetoxicum rossicum or Cynanchum rossicum | |
|
|
|
9/1/2009 |
| Prohibited | Perennial or broadleaved pepperweed | Lepidium latifolium | |
|
|
9/1/2009 | |
| Prohibited | Policeman's helmet | Impatiens glandulifera | |
|
|
5/1/2015 | |
| Prohibited | Porcelain berry | Ampelopsis brevipedunculata | |
|
|
|
9/1/2009 |
| Prohibited | Princess tree | Paulownia tomentosa | |
|
|
|
9/1/2009 |
| Prohibited | Russian knapweed | Centaurea repens | |
|
|
5/1/2015 | |
| Prohibited | Sawtooth oak | Quercus acutissima | |
|
|
|
9/1/2009 |
| Prohibited | Scotch broom | Cytisus scoparius | |
|
|
|
9/1/2009 |
| Prohibited | Sericea or Chinese lespedeza | Lespedeza cuneata or Lespedeza sericea | |
|
|
|
9/1/2009 |
| Prohibited | Spreading hedgeparsley | Torilis arvensis | |
|
|
9/1/2009 | |
| Prohibited | Wavy leaf basket grass | Oplismenus hirtellus ssp. undulatifolius | |
|
|
5/1/2015 | |
| Prohibited | Wineberry or wine raspberry | Rubus phoenicolasius | |
|
|
|
9/1/2009 |
| Prohibited | Yellow star thistle | Centaurea solstitialis | |
|
|
9/1/2009 | |
| Prohibited/Restricted | Amur honeysuckle | Lonicera maackii | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Black or Louise’s swallow−wort | Vincetoxicum nigrum or Cynanchum louiseae | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Dalmatian toadflax | Linaria dalmatica | |
|
|
5/1/2015 | |
| Prohibited/Restricted | European marsh thistle | Cirsium palustre | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Hairy willow herb | Epilobium hirsutum | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Hill mustard | Bunias orientalis | |
|
|
9/1/2009 | |
| Prohibited/Restricted | Japanese hedgeparsley or erect hedgeparsley | Torilis japonica | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Japanese hops | Humulus japonicus | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Lyme grass or sand ryegrass | Leymus arenarius or Elymus arenarius | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Phragmites or Common reed non-native ecotype | Phragmites australis non-native ecotype | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Poison hemlock | Conium maculatum | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Seaside goldenrod | Solidago sempervirens | |
|
|
5/1/2015 | |
| Prohibited/Restricted | Tall or reed mannagrass | Glyceria maxima | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Wild chervil | Anthriscus sylvestris | |
|
|
|
9/1/2009 |
| Restricted | Amur maple | Acer tataricum subsp. ginnala | |
|
|
5/1/2015 | |
| Restricted | Aquatic forget-me-not | Myosotis scorpioides | |
|
|
5/1/2015 | |
| Restricted | Autumn olive | Elaeagnus umbellata | |
|
|
|
9/1/2009 |
| Restricted | Balfour's touch-me-not | Impatiens balfourii | |
|
|
5/1/2015 | |
| Restricted | Bell’s or showy bush honeysuckle | Lonicera x bella | |
|
|
|
9/1/2009 |
| Restricted | Bishop's goutweed | Aegopodium podagraria | |
|
|
5/1/2015 | |
| Restricted | Black (European) alder | Alnus glutinosa | |
|
|
5/1/2015 | |
| Restricted | Black knapweed | Centaurea nigra | |
|
|
5/1/2015 | |
| Restricted | Black locust | Robinia pseudoacacia | |
|
|
5/1/2015 | |
| Restricted | Brown knapweed | Centaurea jacea | |
|
|
5/1/2015 | |
| Restricted | Burning bush | Euonymus alatus | |
|
|
5/1/2015 | |
| Restricted | Canada thistle | Cirsium arvense | |
|
|
|
9/1/2009 |
| Restricted | Celandine | Chelidonium majus | |
|
|
|
9/1/2009 |
| Restricted | Common buckthorn | Rhamnus cathartica | |
|
|
|
9/1/2009 |
| Restricted | Common teasel | Dipsacus sylvestris or Dipsacus fullonum | |
|
|
|
9/1/2009 |
| Restricted | Creeping bellflower | Campanula rapunculoides | |
|
|
|
9/1/2009 |
| Restricted | Crown vetch | Coronilla varia | |
|
|
5/1/2015 | |
| Restricted | Cut−leaved teasel | Dipsacus laciniatus | |
|
|
|
9/1/2009 |
| Restricted | Cypress spurge | Euphorbia cyparissias | |
|
|
|
9/1/2009 |
| Restricted | Dame’s rocket | Hesperis matronalis | |
|
|
|
9/1/2009 |
| Restricted | Field scabiosa | Knautia arvensis | |
|
|
5/1/2015 | |
| Restricted | Garden heliotrope or Valerian | Valeriana officinalis | |
|
|
5/1/2015 | |
| Restricted | Garden yellow loosestrife | Lysimachia vulgaris | |
|
|
5/1/2015 | |
| Restricted | Garlic mustard | Alliaria petiolata | |
|
|
|
9/1/2009 |
| Restricted | Glossy buckthorn | Rhamnus frangula or Frangula alnus | |
|
|
|
9/1/2009 |
| Restricted | Helleborine orchid | Epipactis helleborine | |
|
|
|
9/1/2009 |
| Restricted | Hemp nettle, brittlestem hemp nettle | Galeopsis tetrahit | |
|
|
|
9/1/2009 |
| Restricted | Hound’s tongue | Cynoglossum officinale | |
|
|
|
9/1/2009 |
| Restricted | Hybrid cattail | Typha x glauca | |
|
|
|
9/1/2009 |
| Restricted | Japanese barberry | Berberis thunbergii | |
|
|
5/1/2015 | |
| Restricted | Japanese knotweed | Fallopia japonica or Polygonum cuspidatum | |
|
|
|
9/1/2009 |
| Restricted | Leafy spurge | Euphorbia esula | |
|
|
|
9/1/2009 |
| Restricted | Moneywort | Lysimachia nummularia (or L. nummelaria) | |
|
|
5/1/2015 | |
| Restricted | Morrow’s honeysuckle | Lonicera morrowii | |
|
|
|
9/1/2009 |
| Restricted | Multiflora rose | Rosa multiflora | |
|
|
|
9/1/2009 |
| Restricted | Musk thistle or Nodding thistle | Carduus nutans | |
|
|
|
9/1/2009 |
| Restricted | Narrow-leaf cattail | Typha angustifolia | |
|
|
|
9/1/2009 |
| Restricted | Oriental bittersweet | Celastrus orbiculatus | |
|
|
|
9/1/2009 |
| Restricted | Plumeless thistle | Carduus acanthoides | |
|
|
|
9/1/2009 |
| Restricted | Purple loosestrife | Lythrum salicaria | |
|
|
|
9/1/2009 |
| Restricted | Queen of the meadow | Filipendula ulmaria | |
|
|
5/1/2015 | |
| Restricted | ribbon grass or gardener’s garters and other ornamental variegated varieties and cultivars. | Phalaris arundinacea var. picta | |
|
|
5/1/2015 | |
| Restricted | Rose acacia or Bristly locust | Robinia hispida | |
|
|
5/1/2015 | |
| Restricted | Russian olive | Elaeagnus angustifolia | |
|
|
|
9/1/2009 |
| Restricted | Scarlet pimpernel or Burnet saxifrage | Pimpinella saxifraga | |
|
|
5/1/2015 | |
| Restricted | Siberian elm | Ulmus pumila | |
|
|
5/1/2015 | |
| Restricted | Siberian peashrub | Caragana arborescens | |
|
|
5/1/2015 | |
| Restricted | Spotted knapweed | Centaurea biebersteinii, Centaurea maculosa or Centaurea stoebe | |
|
|
|
9/1/2009 |
| Restricted | Tansy | Tanacetum vulgare | |
|
|
|
9/1/2009 |
| Restricted | Tartarian honeysuckle | Lonicera tatarica | |
|
|
|
9/1/2009 |
| Restricted | Tree of heaven | Ailanthus altissima | |
|
|
|
9/1/2009 |
| Restricted | Tyrol knapweed | Centaurea nigrescens | |
|
 |
5/1/2015 | |
| Restricted | White bedstraw | Galium mollugo | |
|
|
5/1/2015 | |
| Restricted | White mulberry | Morus alba | |
|
|
5/1/2015 | |
| Restricted | White poplar | Populus alba | |
|
|
5/1/2015 | |
| Restricted | Wild parsnip | Pastinaca sativa | |
|
|
|
9/1/2009 |
| Restricted | Woodland forget-me-not | Myosotis sylvatica (or M. sylvaticum) | |
|
|
5/1/2015 | |
| Restricted | Wormwood | Artemisia absinthium | |
|
|
5/1/2015 | |
| Restricted | Yellow iris | Iris pseudacorus | |
|
|
5/1/2015 |