State Noxious Weeds

State Prohibited Noxious Weeds

Prohibited noxious weeds are annual, biennial, or perennial plants that the commissioner designates as having the potential or are known to be detrimental to human or animal health, the environment, public roads, crops, livestock or other property. There are two regulatory listings for prohibited noxious weeds in Minnesota. 

1. Eradicate List: Prohibited noxious weeds that are listed to be eradicated are plants that are not currently known to be present in Minnesota or are not widely established. These species must be eradicated, meaning all of the above and below ground parts of the plant must be destroyed, as required by Minnesota Statutes, Section 18.78. Additionally, transportation, propagation, or sale of these is prohibited except as allowed by Minnesota Statutes, Section 18.82. Measures must also be taken to prevent and exclude these species from being introduced into Minnesota.

 Common NameScientific NameYear added to list
1.Black swallow-wortCyanchum louiseae Kartesz & Gandhi2013
2.Brown knapweedCentaurea jacea L.2013
3.Common teaselDipsacus fullonum L.2012
4.Cutleaf teaselDipsacus laciniatus L.2012
5.Dalmatian toadflaxLinaria dalmatica (L.) Mill2012
6.Diffuse knapweedCentaurea diffusa L.2017
7.Giant hogweedHeracleum mantegazzianum Sommier & Levier2012
8.Grecian foxgloveDigitalis lanata Ehrh.2010
9.Japanese honeysuckleLonicera japonica Thunb.2020
10.Japanese hopsHumulus japonicus Siebold & Zucc.2012
11.Meadow knapweedCentaurea x moncktonii C.E. Britton2013
12.Oriental bittersweetCelastrus orbiculatus Thunb.2011
13.Palmer amaranthAmaranthus palmeri S. Watson2015
14.Poison hemlockConium maculatum L.2018
15.Tree of heavenAilanthus altissima (Mill.) Swingle2017
16.Yellow starthistleCentaurea solstitialis L.2010

Giant hogweed and yellow starthistle are not known to be in Minnesota but have been determined to be a threat to invade the state.

2. Control List: Prohibited noxious weeds listed to be controlled are plants established throughout Minnesota or regions of the state. Species on this list must be controlled, meaning efforts must be made to prevent the spread, maturation and dispersal of any propagating parts, thereby reducing established populations and preventing reproduction and spread as required by Minnesota Statutes, Section 18.78. Additionally, propagation, sale, or transportation of these plants is prohibited except as allowed by Minnesota Statutes, Section 18.82.

 Common NameScientific NameYear added to list
1.Bohemian knotweedPolygonum x bohemicum (J. Chrtek & Chrtkova) Zika & Jacobson2020
2.Canada thistleCirsium arvense (L.) Scop.1872
3.Common barberryBerberis vulgaris L.2017
4.Common tansyTanacetum vulgare L.2010
5.Giant knotweedPolygonum sachalinese F. Schmidt ex Maxim2014
6.Japanese knotweedPolygonum cuspidatum Seibold & Zucc.2014
7.Leafy spurgeEuphorbia esula L.1992
8.Narrowleaf bittercressCardamine impatiens L.2012
9.Plumeless thistleCarduus acanthoides L.1975
10Purple loosestrifeLythrum salicaria L.1992
11.Spotted knapweedCentaurea stoebe L. ssp. micranthos (Gugler) Hayek2001
12.Wild parsnipPastinaca sativa L. (except for non-wild cultivated varieties)2010

Restricted Noxious Weeds

Restricted noxious weeds are plants that are widely distributed in Minnesota and are detrimental to human or animal health, the environment, public roads, crops, livestock or other property, but whose only feasible means of control is to prevent their spread by prohibiting the importation, sale, and transportation of their propagating parts in the state except as allowed by Minnesota Statutes, Section 18.82. Plants designated as Restricted Noxious Weeds may be reclassified if effective means of control are developed. 

 Common NameScientific NameYear added to list
1.Amur honeysuckleLonicera maackii (Rupr.) Herder2017
2.Bell’s honeysuckleLonicera x bella Zabel2017
3.Black locustRobinia pseudoacacia L.2017
4.Common or European buckthornRhamnus cathartica L.1999
5.Crown vetchSecurigera varia (L.) Lassen2017
6.European alderAlnus glutinosa (L.) Gaertn.2020
7.Garlic mustardAlliaria petiolata Bieb.2013
8.Glossy buckthorn (and all cultivars)Frangula alnus Mill.1999
9.Japanese barberry cultivarsBerberis thunbergii DC.2015
10.Morrow’s honeysuckleLonicera morrowii A. Gray2017
11.Multiflora roseRosa multiflora Thunb.2012
12.Non-native PhragmitesPhragmites australis (Cav.) Trin ex Steud. ssp. australis2013
13.Porcelain berryAmpelopsis brevipedunculata (Maxim.) Trautv.2017
14.Siberian peashrubCaragana arborescens Lam. (exemption for Green Spires® Caragana – Caragana ‘Jefarb’)2020
15.Tatarian honeysuckleLonicera tatarica L.2017
16.Wild carrot/Queen Anne’s LaceDaucus carota L.2017

Specially Regulated Plants

Specially regulated plants are plants that may be native species or have demonstrated economic value, but also have the potential to cause harm in non-controlled environments. Plants designated as specially regulated have been determined to pose ecological, economical, or human or animal health concerns. Plant specific management plans and or rules that define the use and management requirements for these plants will be developed by the Minnesota Department of Agriculture for each plant designated as specially regulated. Measures must also be taken to minimize the potential for harm caused by these plants.

 Common NameScientific NameYear added to listSpecial regulation
1.Amur mapleAcer ginnala Maxim.2016Sellers shall affix a label that advises buyers to only plant Amur maple and its cultivars in landscapes where the seedlings will be controlled by mowing or other means. Amur maple should be planted at least 100 yards from natural areas.
2.Norway mapleAcer platanoides L.2020Sellers shall affix a label that advises “Norway maple should only be planted in areas where the seedlings will be controlled or eradicated by mowing or other means. Norway maple seed is wind dispersed so trees should not be planted closer than 100 yards from natural areas.”
3.Poison ivyToxicodendron radicans (L.) Kuntze & T. rydbergii (Small) Green2010Must be eradicated or controlled for public safety along rights-of-ways, trails, public accesses, business properties open to the public or on parts of lands where public access for business or commerce is granted. Must also be eradicated or controlled along property boarders when requested by adjoining landowners.
4.Winged burning bushEuonymus alatus Thunb.2020Three-year production phase-out period, after which sale of this species will be prohibited and the species will move to the Restricted list in 2023.