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/Restricted | Amur honeysuckle | Lonicera maackii | |
|
|
|
9/1/2009 |
| Restricted | Amur maple | Acer tataricum subsp. ginnala | |
|
|
5/1/2015 | |
| Restricted | Aquatic forget-me-not | Myosotis scorpioides | |
|
|
5/1/2015 | |
| Prohibited | Asian loeseneri bittersweet | Celastrus loeseneri | |
|
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 | |
| Prohibited/Restricted | Black or Louise’s swallow−wort | Vincetoxicum nigrum or Cynanchum louiseae | |
|
|
|
9/1/2009 |
| Prohibited | Bohemian knotweed | Fallopia x bohemicum or F. x bohemica or Polygonum × bohemicum | |
|
5/1/2015 | ||
| Restricted | Brown knapweed | Centaurea jacea | |
|
|
5/1/2015 | |
| Restricted | Burning bush | Euonymus alatus | |
|
|
5/1/2015 | |
| Prohibited | Butterfly dock | Petasites hybridus | |
|
|
5/1/2015 | |
| Restricted | Canada thistle | Cirsium arvense | |
|
|
|
9/1/2009 |
| Restricted | Celandine | Chelidonium majus | |
|
|
|
9/1/2009 |
| 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 | ||
| 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 |
| Prohibited/Restricted | Dalmatian toadflax | Linaria dalmatica | |
|
|
5/1/2015 | |
| Restricted | Dame’s rocket | Hesperis matronalis | |
|
|
|
9/1/2009 |
| Prohibited | Diffuse knapweed | Centaurea diffusa | |
|
|
5/1/2015 | |
| Prohibited/Restricted | European marsh thistle | Cirsium palustre | |
|
|
|
9/1/2009 |
| Restricted | Field scabiosa | Knautia arvensis | |
|
|
5/1/2015 | |
| Prohibited | Fiveleaf akebia or Chocolate vine | Akebia quinata | |
|
|
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 |
| Prohibited | Giant hogweed | Heracleum mantegazzianum | |
|
|
|
9/1/2009 |
| Prohibited | Giant knotweed | Fallopia sachalinensis or Polygonum sachalinense | |
|
|
|
9/1/2009 |
| Restricted | Glossy buckthorn | Rhamnus frangula or Frangula alnus | |
|
|
|
9/1/2009 |
| Prohibited | Grecian foxglove | Digitalis lanata | |
|
|
5/1/2015 | |
| Prohibited/Restricted | Hairy willow herb | Epilobium hirsutum | |
|
|
|
9/1/2009 |
| Restricted | Helleborine orchid | Epipactis helleborine | |
|
|
|
9/1/2009 |
| Restricted | Hemp nettle, brittlestem hemp nettle | Galeopsis tetrahit | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Hill mustard | Bunias orientalis | |
|
|
9/1/2009 | |
| Prohibited | Himalayan blackberry | Rubus armeniacus | |
|
5/1/2015 | ||
| Restricted | Hound’s tongue | Cynoglossum officinale | |
|
|
|
9/1/2009 |
| Restricted | Hybrid cattail | Typha x glauca | |
|
|
|
9/1/2009 |
| Prohibited | Indian yam | Dioscorea oppositifolia | |
|
|
9/1/2009 | |
| Restricted | Japanese barberry | Berberis thunbergii | |
|
|
5/1/2015 | |
| Prohibited | Japanese chaff flower | Achyranthes japonica | |
|
|
5/1/2015 | |
| Prohibited/Restricted | Japanese hedgeparsley or erect hedgeparsley | Torilis japonica | |
|
|
|
9/1/2009 |
| Prohibited | Japanese honeysuckle | Lonicera japonica | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Japanese hops | Humulus japonicus | |
|
|
|
9/1/2009 |
| Restricted | Japanese knotweed | Fallopia japonica or Polygonum cuspidatum | |
|
|
|
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 |
| Restricted | Leafy spurge | Euphorbia esula | |
|
|
|
9/1/2009 |
| Prohibited | Lesser celandine | Ranunculus ficaria | |
|
|
5/1/2015 | |
| Prohibited/Restricted | Lyme grass or sand ryegrass | Leymus arenarius or Elymus arenarius | |
|
|
|
9/1/2009 |
| Prohibited | Medusahead | Taeniatherum caput-medusae | |
|
|
5/1/2015 | |
| Prohibited | Mile−a−minute vine | Polygonum perfoliatum or Persicaria perfoliata | |
|
|
|
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 |
| Prohibited | Narrow leaf bittercress | Cardamine impatiens | |
|
|
5/1/2015 | |
| Restricted | Narrow-leaf cattail | Typha angustifolia | |
|
|
|
9/1/2009 |
| Restricted | Oriental bittersweet | Celastrus orbiculatus | |
|
|
|
9/1/2009 |
| 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/Restricted | Phragmites or Common reed non-native ecotype | Phragmites australis non-native ecotype | |
|
|
|
9/1/2009 |
| Restricted | Plumeless thistle | Carduus acanthoides | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Poison hemlock | Conium maculatum | |
|
|
|
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 |
| 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 | |
| Prohibited | Russian knapweed | Centaurea repens | |
|
|
5/1/2015 | |
| Restricted | Russian olive | Elaeagnus angustifolia | |
|
|
|
9/1/2009 |
| Prohibited | Sawtooth oak | Quercus acutissima | |
|
|
|
9/1/2009 |
| Restricted | Scarlet pimpernel or Burnet saxifrage | Pimpinella saxifraga | |
|
|
5/1/2015 | |
| Prohibited | Scotch broom | Cytisus scoparius | |
|
|
|
9/1/2009 |
| Prohibited/Restricted | Seaside goldenrod | Solidago sempervirens | |
|
|
5/1/2015 | |
| Prohibited | Sericea or Chinese lespedeza | Lespedeza cuneata or Lespedeza sericea | |
|
|
|
9/1/2009 |
| 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 |
| Prohibited | Spreading hedgeparsley | Torilis arvensis | |
|
|
9/1/2009 | |
| Prohibited/Restricted | Tall or reed mannagrass | Glyceria maxima | |
|
|
|
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 | |
| Prohibited | Wavy leaf basket grass | Oplismenus hirtellus ssp. undulatifolius | |
|
|
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 | |
| Prohibited/Restricted | Wild chervil | Anthriscus sylvestris | |
|
|
|
9/1/2009 |
| Restricted | Wild parsnip | Pastinaca sativa | |
|
|
|
9/1/2009 |
| Prohibited | Wineberry or wine raspberry | Rubus phoenicolasius | |
|
|
|
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 | |
| Prohibited | Yellow star thistle | Centaurea solstitialis | |
|
|
9/1/2009 |