Skip to Main navigation Skip to Left navigation Skip to Main content Skip to Footer

University of Minnesota Extension
www.extension.umn.edu
612-624-1222

Extension > Agriculture > Crops > Weed management > Weed identification > Perennial weed identification

Print Icon Email Icon Share Icon

Perennial weed identification

Gerald R. Miller, former Extension agronomist
Oliver E. Strand, former Extension agronomist
Reviewed 2014

Descriptions of perennial weeds

Click on highlighted text or photo for larger image. Photos are from the Strand Memorial Herbarium, unless otherwise noted.

Jerusalem artichoke

Source: Theodore Webster, USDA Agricultural Research Service, Bugwood.org

Jerusalem artichoke

Artichoke, Jerusalem,
(Helianthus tuberosus L.)

Leaves

Flowers

Plant characteristics

Field bindweed
Field bindweed

Source: Norman E. Rees, USDA Agricultural
Research Service – Retired, Bugwood.org

Field bindweed vine and leaf (above) and flower (below).

Bindweed, field
(Convolvulus arvensis L.)

Leaves

Flowers and seeds

Plant characteristics

Hedge bindweed
Hedge bindweed seeds

Source: Julia Scher, USDA APHIS PPQ, Bugwood.org

Hedge bindweed plant (above) and seeds (below).

Bindweed, hedge
(Calystegia sepium (L.) R.Br.)

Leaves

Flowers and seeds

Plant characteristics

Yellow nutsedge stem

Source: Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org

Yellow nutsedge

Source: Steve Dewey, Utah State University, Bugwood.org

Yellow nutsedge stem (above) and flowering plant (below).

Nutsedge, yellow
(Cyperus esculentus L.)

Leaves

Ligule

Flowers

Plant characteristics

Quackgrass

Source: Ohio State Weed Lab Archives, The Ohio State University, Bugwood.org

Quackgrass inflorescence

Source: Ohio State Weed Lab Archives, The Ohio State University, Bugwood.org

Quackgrass plant (above) and spike (below).

Quackgrass
(Elymus repens (L.) Gould)

Leaf sheath and blades

Ligule

Inflorescence

Plant characteristics

Perennial sowthistle

Source: Ohio State Weed Lab Archives, The Ohio State University, Bugwood.org

Perennial sowthistle

Perennial sowthistle stem (above) and flowering plant (below).

Sowthistle, perennial
(Sonchus arvensis L.)

Leaves

Flowers and seeds

Plant characteristics

Canada thistle

Source: Rob Routledge, Sault College, Bugwood.org

Canada thistle

Canada thistle stem close-up (above) and flowering plant (below).

Thistle, Canada
(Cirsium arvensis (L.) Scop.)

Leaves

Flowers and seeds

Plant characteristics

  • © Regents of the University of Minnesota. All rights reserved.
  • The University of Minnesota is an equal opportunity educator and employer. Privacy