Weed of the Month: Common Lambsquarters

  • Common LambsquartersCommon name: Common lambsquarters
  • Scientific name: Chenopodium album1
  • Grass or broadleaf: Summer annual broadleaf1
  • Germination timing: Common lambsquarters emerges early in the growing season, so it is key to control this weed with a postemergence herbicide prior to reaching maximum control heights.1
  • The seeds of common lambsquarters can remain dormant for many years. Fifty percent of seeds have been found to survive for 12 years, 32 percent have been found to survive for 20 years and one percent of seeds has been found to last 78 years.1
  • The cotyledons and early leaves appear blue-green on the top and a purple-red on the underside of the leaf.2

Fast facts

  • Common lambsquarters can grow up to five feet tall.2
  • Night tilling, also known as dark tillage, will reduce the emergence by 30 percent to 70 percent.1
  • Including small grains into crop rotation can suppress the growth of lambsquarters.1
  • Mature common lambsquarters’ leaves are pale green, triangular and up to 2 inches in length.2
  • The new leaves on common lambsquarters can be identified by their white, waxy coating.2
  • Common lambsquarters can produce 30,000-176,000 seeds per plant.1
  • The flowers of the common lambsquarters bloom from May to November.2

Resistance statistics*

  • According to WeedScience.org, herbicide-resistant common lambsquarters (mostly to PSII (WSSA Group 5) inhibitors) has been discovered in 22 states:* Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, Tennessee, Vermont, Virginia, Washington, West Virginia and Wisconsin.

*Resistance confirmation does not include all weeds and may vary among different areas of each state.

Corteva Agriscience, Agriculture Division of DowDuPont, offers the following weed control solutions:

Corn Herbicides

DuPont Cinch® ATZ herbicide
Durango® DMA® herbicide
Elevore® herbicide
Enlist Duo® herbicide, as part of the Enlist weed control system
Enlist One herbicide, as part of the Enlist weed control system
FulTime® NXT herbicide
Keystone® LA NXT herbicide
Keystone® NXT herbicide
DuPont Realm® Q herbicide
Resicore® herbicide
SureStart® II herbicide

Soybean Herbicides
Durango® DMA® herbicide
Elevore herbicide
Enlist Duo® herbicide, as part of the Enlist weed control system
Enlist One herbicide, as part of the Enlist weed control system
DuPont EverpreX® herbicide
FirstRate® herbicide
Sonic® herbicide
Surveil® herbicide
DuPont Trivence® herbicide
DuPontEnlite® herbicide
DuPontAfforia® herbicide
DuPont™ FeXapan™ herbicide Plus VaporGrip® Technology


Sources:

1Michigan State University, Department of Plant, Soil and Microbial Sciences 2019. Common Lambsquarters. https://www.canr.msu.edu/weeds/extension/common-lambsquarters
2University of California Integrated Pest Management 2019. Common lambsquarters.  http://ipm.ucanr.edu/PMG/WEEDS/lambsquarters.html

®™Trademarks of Dow AgroSciences, DuPont or Pioneer, and their affiliated companies or their respective owners. Cinch ATZ, FeXapan, FulTime NXT, Keystone LA NXT and Keystone NXT are federally Restricted Use Pesticides. Cinch ATZ, Durango DMA, Elevore, FulTime NXT, Keystone LA NXT, Realm, Resicore, Sonic, SureStart II, Surveil and Trivence are not registered for sale or use in all states. Keystone NXT is not available for sale, distribution or use in all states. FulTime NXT, Keystone LA NXT, Keystone NXT, Resicore and SureStart II are not available for sale, distribution or use in Nassau and Suffolk counties in the state of New York. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. DuPont™ FeXapan® herbicide Plus VaporGrip® Technology is not registered for sale in all states. Contact your local DuPont retailer or representative for details and availability in your state. EverpreX is not registered in all states. See your DuPont retailer or representative for availability in your state. Enlist Duo and Enlist One herbicides are not registered for sale or use in all states or counties. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your area. Enlist Duo and Enlist One herbicides are the only 2,4-D products authorized for use in Enlist crops. Consult Enlist herbicide labels for weed species controlled. Always read and follow label directions. ©2019 Dow AgroSciences LLC