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Extension > Agriculture > Crops > Weed management > Weed identification > Annual broadleaf weed identification

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Annual broadleaf weed identification

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

Descriptions of annual broadleaf weeds

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

wild buckwheat

Buckwheat, wild

Buckwheat, wild

Leaves
Flowers and seeds
Plant characteristics
buffalobur

Buffalobur

Buffalobur

Leaves
Flowers and seeds
Plant characteristics
common-cocklebur

Common cocklebur

Cocklebur, common

Leaves
Flowers and seeds
Plant characteristics
kochia

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

Kochia

Kochia

Leaves
Flowers and seeds
Plant characteristics
common lambsquarters

Source: Robert Videki, Doronicum Kft., Bugwood.org

Common lambsquarters

Lambsquarters, common

Leaves
Flowers and seeds
Plant characteristics
Marshelder

Marshelder

Marshelder

Leaves
Flowers and seeds
Plant characteristics
wild-mustard

Wild mustard

Mustard, wild

Leaves
Flowers and seeds
Plant characteristics
black-nightshade

Black nightshade

Nightshade, black

Leaves
Flowers and seeds
Plant characteristics
redroot-pigweed

Source: Robert Videki, Doronicum Kft., Bugwood.org

Redroot pigweed

Pigweed, redroot

Leaves
Flowers and seeds
Plant characteristics
common-ragweed

Common ragweed

Ragweed, common

Leaves
Flowers and seeds
Plant characteristics
giant-ragweed

Giant ragweed

Ragweed, giant

Leaves
Flowers and seeds
Plant characteristics
pennsylvania-smartweed

Pennsylvania smartweed

Smartweed, Pennsylvania

Leaves
Flowers and seeds
Plant characteristics
wild-sunflower

Wild sunflower

Sunflower, wild

Leaves
Flowers and seeds
Plant characteristics
russian-thistle

Thistle, Russian

Russian thistle

Leaves
Flowers and seeds
Plant characteristics
velvetleaf

Source: Jan Samancek, State Phytosanitary Admin., Bugwood.org

Velvetleaf

Velvetleaf

Leaves
Flowers and seeds
Plant characteristics
Waterhemp in Minnesota soybean

Source: U of MN SE IPM

Waterhemp in a Minnesota soybean field.

Waterhemp, common and tall

Leaves
Flowers and seeds
Plant characteristics


In cooperation with NCR Educational Materials Project.

Issued in furtherance of Cooperative Extension work, Acts of Congress of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture and Cooperative Extension Services of Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, and Wisconsin, Charles H. Casey, Interim Dean and Director, University of Minnesota Extension Service, St. Paul, Minnesota 55108.

Sponsored by the Extension services of Illinois, Iowa, Kansas, Michigan, Minnesota, Nebraska, North Dakota, and Ohio, in cooperation with SEA-Extension, USDA.

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