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