Common Lambsquarters

Note from the GROW team: This page is being updated in an effort to provide you with the most accurate and timely information. In the meantime, please visit the rest of our website to learn more about the tactics to manage herbicide-resistant weeds.

Common lambsquarters developed resistance to Group 5 herbicides (triazines) very early on in the history of herbicide resistance. It was first confirmed in the US in 1975 infesting corn, soybean, and nurseries. The species is very common throughout many regions of the US.

Herbicide resistant populations:

Group 5
Group 2

Image result for lambsquarters penn state

For more information on common lambsquarters management, visit:
https://iwilltakeaction.com/weed/common-lambsquarters

Resources

Take Action on Weeds: www.iwilltakeaction.com/weed/common-lambsquarters

Lambsquarters Fact Sheet – HRAC

Management of Triazine Resistant Lambsquarters and Pigweed – Penn State University

Control of Lambsquarters in Corn and Soybean in Ohio – Ohio State University

Hero photo and Hero Circle photo credit: Claudio Rubione, University of Delaware

IWM best practices are constantly changing and it is GROW’s goal to keep you up to date on the science and advice that best combat herbicide-resistant weeds. Sign up below to stay up to date.