County noxious weeds include noxious weed that are designated by individual county boards to be enforced as prohibited noxious weeds 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 commissioner 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.

The following is the listing of MDA/NWAC Approved County Noxious Weeds. County boards are responsible for developing County Noxious Weed Lists through an official county resolution and assume all responsibility for enforcement.

1. Becker (2011; 2014; 2020)

  • Bertero incana (L.) DC., Hoary Alyssum
  • Artemisia absinthium L., Absinthe Wormwood
  • Cynoglossum officinale L., Houndstongue
  • Hieracium aurantiacum L., Orange Hawkweed (2014)
  • Hieracium caespitosum Dumort, Yellow Hawkweed (2014)
  • Phragmites australis  subsp. australis ((Cav.) Trin. ex Stued), Non-native Phragmites (2020)

2. Clay (2011 & 2014)

  • Cirsium vulgare (Savi) Ten., Bull Thistle
  • Bassia scoparia (L.) A.J. Scott, Kochia
  • Carduus nutans L., Musk Thistle

3. Clearwater (2020)

  • Hieracium aurantiacum L., Orange Hawkweed
  • Hieracium caespitosum Dumort, Yellow Hawkweed

4. Cottonwood (2011)

  • Solanum rostratum Dunal, Buffalobur
  • Abutilon theophrasti Medik., Velvetleaf
  • Xanthium strumarium L., Common Cocklebur - MDA approved with restrictions due to it being a native species
  • Helianthus annuus L., Common Sunflower - MDA approved with restrictions due to it being a native species

5. Chippewa (2011)

  • Abutilon theophrasti Medik., Velvetleaf
  • Xanthium strumarium L., Common Cocklebur - MDA approved with restrictions due to it being a native species
  • Helianthus annuus L., Common Sunflower - MDA approved with restrictions due to it being a native species

6. Koochiching (2011)

  • Cirsium vulgare (Savi) Ten., Bull Thistle
  • Convolvulus arvensis L., Field Bindweed
  • Cannabis sativa L., Non-licensed Hemp
  • Sonchus arvensis L., Perennial Sowthistle
  • Ranunculus acris L., Tall Buttercup
  • Hieracium aurantiacum L., Orange Hawkweed

7. Lincoln (2017)

  • Cirsium vulgare (Savi) Ten., Bull Thistle
  • Carduus nutans L., Musk Thistle

8. Murray (2012)

  • Abutilon theophrasti Medik., Velvetleaf
  • Cannabis sativa L., Non-licensed Hemp
  • Xanthium strumarium L., Common Cocklebur  - MDA approved with restrictions due to it being a native species
  • Helianthus annuus L., Common Sunflower - MDA approved with restrictions due to it being a native species

9. Sibley (2018)

  • Ambrosia trifida L., Giant Ragweed - MDA approved with restrictions due to it being a native species

10. Steele (2011)

  • Abutilon theophrasti Medik., Velvetleaf
  • Xanthium strumarium L., Common Cocklebur - MDA approved with restrictions due to it being a native species
  • Solanum ptycanthum Dunal, Eastern Black Nightshade - MDA approved with restrictions due to it being a native species
  • Panicum miliaceum L., Wild Proso Millet

11. Waseca (2012)

  • Abutilon theophrasti Medik., Velvetleaf
  • Xanthium strumarium L., Common Cocklebur  - MDA approved with restrictions due to it being a native species
  • Panicum miliaceum,  Wild Proso Millet
  • Brassica spp., Wild Mustard
  • Cirsium vulgare (Savi) Ten., Bull Thistle
  • Convolvulus arvensis L., Field Bindweed
  • Cannabis sativa L., Non-licensed Hemp
  • Sonchus arvensis L., Perennial Sowthistle
  • Ambrosia trifida L., Giant Ragweed - MDA approved with restrictions due to it being a native species
  • Echinocystis lobata (Michx.) Torr. & A. Gray, Wild Cucumber - MDA approved with restrictions due to it being a native species
  • Solanum ptycanthum Dunal, Eastern Black Nightshade - MDA approved with restrictions due to it being a native species
  • Amaranthus tuberculatus, Common Waterhemp - MDA approved with restrictions due to it being a native species

12. Yellow Medicine (2019)

  • Cirsium vulgare (Savi) Ten., Bull Thistle
  • Carduus nutans L., Musk thistle