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. Years following the species name indicate when it was listed.
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.
- Palmer Amaranth, Amaranthus palmeri S. Watson - 2014
- Oriental Bittersweet, Celastrus orbiculatus Thunb - 2010
- Diffuse Knapweed, Centaurea diffusa Lam. - 2014
- Brown Knapweed, Centaurea jacea L. - 2012
- Yellow Star Thistle, Centaurea solstitialis L. - 2010 *Species not known to be in Minnesota, but has been determined to be a threat to invade the state.
- Meadow Knapweed, Centaurea x moncktonii C.E. Britton - 2012
- Poison Hemlock, Conium maculatum L. - 2017
- Black Swallow-wort, Cynanchum louiseae Kartesz & Gandhi - 2012
- Grecian Foxglove, Digitalis lanata Ehrh. - 2010
- Common Teasel, Dipsacus fullonum L. - 2011
- Cut-leaved Teasel, Dipsacus laciniatus L. - 2011
- Giant Hogweed, Heracleum mantegazzianum Sommier & Levier - 2011 *Species not known to be in Minnesota, but has been determined to be a threat to invade the state.
- Japanese Hops, Humulus japonicus Siebold & Zucc. - 2011
- Dalmatian Toadflax, Linaria dalmatica (L.) Mill. - 2011
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 Barberry, Berberis vulgaris L. - 2016
- Narrowleaf Bittercress, Cardamine impatiens L. - 2011
- Plumeless Thistle, Carduus acanthoides (L.) - 1975
- Spotted Knapweed, Centaurea stoebe ssp. micranthos - 2001
- Canada Thistle, Cirsium arvense (L.) Scop. - 1872
- Leafy Spurge, Euphorbia esula (L.) - 1992
- Purple Loosestrife, Lythrum salicaria, virgatum (L.) - 1992
- Wild Parsnip, Pastinaca sativa L. (Except for non-wild cultivated varieties) - 2010
- Common Tansy, Tanacetum vulgare (L.) - 2010
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. Years following the species name indicate when it was listed.
- Tree of Heaven, Ailanthus altissima (Mill.) Swingle - 2016
- Garlic Mustard, Alliaria petiolata (Bieb.) - 2013
- Porcelain Berry, Ampelopsis brevipedunculata (Maxim.) Trautv. - 2016
- Crown Vetch, Securigera varia (L.) Lassen - formerly Coronilla varia L. - 2016
- Wild Carrot / Queen Anne's Lace, Daucus carota L. - 2016
- Glossy Buckthorn (and all cultivars), Frangula alnus Mill. (columnaris, tallcole, asplenifolia and all other cultivars) - 1999
- Amur Honeysuckle, Lonicera maackii (Rupr.) Herder - 2016
- Morrow's Honeysuckle, Lonicera morrowii A. Gray - 2016
- Bell's Honeysuckle, Lonicera x bella Zabel - 2016
- Common Reed - non-native subspecies, Phragmites australis subspecies australis (Cav.) Trin. ex Steud. - 2013
- Common or European Buckthorn, Rhamnus cathartica (L.) - 1999
- Black Locust, Robinia pseudoacacia L. - 2016
- Multiflora Rose, Rosa multiflora Thunb. - 2011
- Tatarian Honeysuckle, Lonicera tatarica L. - 2016
- Japanese Barberry Cultivars, Berberis thunbergii DC. - 2017
‘Anderson’ (Lustre Green™); ‘Angel Wings’; ‘Antares’; ‘Bailgreen’ (Jade Carousel®);‘Bailone’ (Ruby Carousel®); ‘Bailsel’ (Golden Carousel® - B. koreana × B. thunbergii hybrid); ‘Bailtwo’ (Burgundy Carousel®); B. thunbergii var. atropurpurea; ‘Crimson Velvet’; ‘Erecta’; ‘Gold Ring’; ‘Inermis’; ‘JN Redleaf’ (Ruby Jewel™); ‘JN Variegated’ (Stardust™); ‘Kelleris’; ‘Kobold’; ‘Marshall Upright’; ‘Monomb’ (Cherry Bomb™); ‘Painter’s Palette’; ‘Pow Wow’; ‘Red Rocket’; ‘Rose Glow’; ‘Silver Mile’; ‘Sparkle’; ‘Tara’ (Emerald Carousel® - B. koreana × B. thunbergii hybrid); Wild Type (parent species – green barberry)
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. Years following the species name indicate when it was listed.
- Poison Ivy, Toxicodendron radicans (L.) Kuntze & T. rydbergii (Small) Green - 2010
Must 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.
- Japanese Knotweed, Polygonum cuspidatum Seib. & Zucc. Synonym as Fallopia japonica (Houttuyn) Ronse-Decraene - 2013
- Giant Knotweed, Polygonum sachalinense F. Schmidt ex Maxim. Synonym: Fallopia sachalinensis (F. Schmidt) Ronse-Decraene - 2013
Any person, corporation, business or other retail entity distributing Japanese and/or giant knotweeds for sale within the state, must have information directly affixed to the plant or container packaging that it is being sold with, indicating that it is unadvisable to plant this species within 100 feet of a water body or its designated flood plain as defined by Minnesota Statute 103F.111, Subdivision 4.
- Amur Maple, Acer ginnala Maxim - 2016
Sellers 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.
County Noxious Weeds
County noxious weeds are plants that are designated by individual county boards to be prohibited within the county’s jurisdiction and must be approved by the Commissioner of Agriculture, in consultation with the Noxious Weed Advisory Committee. Each county board must submit newly proposed County Noxious Weeds to the Minnesota Department of Agriculture for review. Approved County Noxious Weeds shall also be posted with the county’s general weed notice prior to May 15th each year. Counties are solely responsible for developing County Noxious Weed lists and their enforcement. Contact your County Agricultural Inspector or County Designated Employee for more information or see a current listing of County Noxious Weeds.
Federal Noxious Weeds
Federal terrestrial and parasitic listed noxious weeds are prohibited in Minnesota. Federal noxious weeds are selected and enforced by the U.S. Department of Agriculture (USDA) and can be reported to the local Animal Plant Health Inspection Service Office (APHIS) in Minneapolis, MN or to the MDA Noxious and Invasive Weed Program. A list of federal noxious weeds and information about the federal weed program can be viewed at the USDA APHIS web site.
- For detailed information about identifying and managing noxious weeds, see Minnesota Noxious Weeds publication from the Minnesota Department of Transportation
- For more information on these plant species, visit Minnesota Wildflowers