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Introduced, Invasive, and Noxious Plants


Iowa State-listed Noxious Weeds
37 records returned

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

Iowa Department of Agricultureand Land Stewardship. 2002. The Iowa weed law (, 20 October 2003). Iowa Department of Agriculture & land Stewardship.

Symbol Scientific Name Noxious Common Name State Noxious Status† Native Status*
CARDU Carduus L. thistle PRNW (I), L48 (I)
PLLA Plantago lanceolata L. buckhorn SNW (I), L48 (I), AK (I), HI (I), PR (I), CAN (I), GL (I), SPM (I)
TRTE Tribulus terrestris L. puncturevine SNW (I), L48 (I), HI (I), CAN (W)
SOBI2 Sorghum bicolor (L.) Moench1 shattercane SNW (I), L48 (I), HI (I), PR (I), VI (I), CAN (I)
DACA6 Daucus carota L. wild carrot, Queen Anne's lace SNW (I), L48 (I), PR (I), CAN (I), SPM (I)
XASTC Xanthium strumarium L. var. canadense (Mill.) Torr. & A. Gray (I), L48 (N), HI (I), CAN (N)
XACO Xanthium commune Britton cocklebur SNW
RHAMN Rhamnus L.2 buckthorn PRNW (I,N), L48 (I,N)
CIRSI Cirsium Mill. thistle PRNW (N), L48 (I,N), GL (I,N), NA (N)
DISA9 Dipsacus sativus (L.) Honck. teasel SNW L48 (I)
LYVI3 Lythrum virgatum L. purple loosestrife SNW L48 (I)
CIAR4 Cirsium arvense (L.) Scop. Canada thistle PRNW L48 (I), AK (I), CAN (I), GL (I), SPM (I)
ELRE4 Elymus repens (L.) Gould L48 (I), AK (I), CAN (I), GL (I), SPM (I)
AGRE2 Agropyron repens (L.) P. Beauv. quackgrass PRNW
SOAR2 Sonchus arvensis L. perennial sowthistle PRNW L48 (I), AK (I), CAN (I), SPM (I)
RUAC3 Rumex acetosella L. sheep sorrel SNW L48 (I), AK (I), HI (I), CAN (I), GL (I), SPM (I)
CIVU Cirsium vulgare (Savi) Ten. L48 (I), AK (I), HI (I), CAN (I), SPM (I)
CILA8 Cirsium lanceolatum (L.) Scop., non Hill bull thistle PRNW
RUCR Rumex crispus L. sour dock SNW L48 (I), AK (I), HI (I), PR (I), CAN (I), SPM (I)
SIAR4 Sinapis arvensis L. L48 (I), AK (I), HI (I), VI (I), CAN (I), GL (I), SPM (I)
SIARA Sinapis arvensis L. ssp. arvensis L48 (I), AK (I), HI (I), VI (I), CAN (I), GL (I), SPM (I)
BRAR11 Brassica arvensis (L.) Rabenh., non L., nom. illeg. wild mustard SNW
ABTH Abutilon theophrasti Medik. butterprint, velvetleaf SNW L48 (I), CAN (I)
ACRE3 Acroptilon repens (L.) DC. L48 (I), CAN (I)
CERE6 Centaurea repens L. Russian knapweed PRNW
CADR Cardaria draba (L.) Desv. L48 (I), CAN (I)
LEDR Lepidium draba L. perennial pepper-grass PRNW
COMA2 Conium maculatum L. poison hemlock SNW L48 (I), CAN (I)
DIFU2 Dipsacus fullonum L. teasel SNW L48 (I), CAN (I)
DILA4 Dipsacus laciniatus L. teasel SNW L48 (I), CAN (I)
EUES Euphorbia esula L. leafy spurge PRNW L48 (I), CAN (I)
ROMU Rosa multiflora Thunb.3 multiflora rose SNW L48 (I), CAN (I)
LYSA2 Lythrum salicaria L.4 purple loosestrife SNW L48 (I), CAN (I), SPM (I)
COAR4 Convolvulus arvensis L. European morning glory, field bindweed PRNW L48 (I), HI (I), CAN (I)
HEAN3 Helianthus annuus L. wild sunflower SNW L48 (N), AK (I), HI (I), PR (I), CAN (I), SPM (I)
SOCA3 Solanum carolinense L. horse nettle PRNW L48 (N), CAN (I)
RUAL4 Rumex altissimus Alph. Wood smooth dock SNW L48 (N), CAN (N), SPM (N)


†CodeNoxious Status
PRNW Primary noxious weed
SNW Secondary noxious weed

*CodeNative Status
I Introduced
I,N None
N Native
W Waif

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

1 not a noxious weed when cultivated  
2 except R. frangula  
3 not considered a noxious weed when used as a rootstock for cultivated roses  
4 it is illegal to import, sell, offer for sale, or distribute the seeds or the plants of purple loosestrife in any form  

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

  • IA-Common Roadside Invasive Plants in Iowa
  • IA-Integrated Pest Management (Iowa State University)
  • IA-Iowa Department of Agriculture and Land Stewardship
  • IA-Iowa State University Cooperative Extension
  • IA-Iowa State Weed Science Online
  • IA-Iowa State Weed Science Online: Herbicide Manual for Ag Professionals
  • IA-Iowa State Weed Science Online: the Iowa Weed Law
  • IA-Iowa State Weed Science Online: Weed Management Resources
  • IA-Weed Science Reference Desk
  • Northern Prairies Wildlife Research Center: Exotic Species Abstracts
  • Weeds of the North Central States


Time Generated: 09/19/2020 01:30 AM CDT