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Introduced, Invasive, and Noxious Plants


Illinois State-listed Noxious Weeds
10 records returned

Noxious weeds that are synonyms retain their noxious status, and are indented beneath the current PLANTS accepted name.

Illinois Administrative Code. 2002. Illinois noxious weed law (, 20 October 2003). State of Illinois.

Symbol Scientific Name Noxious Common Name State Noxious Status† Native Status*
AMAR2 Ambrosia artemisiifolia L.1 common ragweed NW L48 (I,N), HI (I), CAN (N)
AMTR Ambrosia trifida L.1 giant ragweed NW L48 (N), CAN (N)
CASA3 Cannabis sativa L. marijuana NW L48 (I), HI (I), PR (I), CAN (I)
CANU4 Carduus nutans L. musk thistle NW L48 (I), CAN (I)
CIAR4 Cirsium arvense (L.) Scop. Canada thistle NW L48 (I), AK (I), CAN (I), GL (I), SPM (I)
PUMOL Pueraria montana (Lour.) Merr. var. lobata (Willd.) Maesen & S.M. Almeida ex Sanjappa & Predeep (I), L48 (I), HI (I)
PULO Pueraria lobata (Willd.) Ohwi kudzu NW
SOAR2 Sonchus arvensis L. perennial sowthistle NW L48 (I), AK (I), CAN (I), SPM (I)
SOAL Sorghum almum Parodi Columbus grass NW L48 (I)
SOHA Sorghum halepense (L.) Pers. johnsongrass NW (I), L48 (I), HI (I), PR (I), CAN (I)


†CodeNoxious Status
NW Noxious weed

*CodeNative Status
I Introduced
I,N None
N Native

*CodeNative Status Jurisdiction
L48 Lower 48 States
AK Alaska
HI Hawaii
PR Puerto Rico
CAN Canada
GL Greenland
SPM St. Pierre and Miquelon

1 within the corporate limits of cities, villages, and incorporated towns  

Additional information about noxious plants in this state can be found at:

  • Great Lakes Indian Fish and Wildlife Commission-Exotic Plants
  • IL-Administrative Code: Noxious Weeds
  • IL-Illinois Department of Agriculture
  • IL-IPM Resources (Univ of Illinois)
  • IL-Southern Illinois University Weed Identification
  • IL-University of Illinois Extension
  • IL-Weed Science Lab at the Univ. of Illinois
  • IL-Weedy Wildflowers of Illinois
  • University of Illinois Extension Publications-Weed Control
  • Weeds of the North Central States


Time Generated: 02/05/2023 12:03 PM CST