Lambsquarters, common

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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

Resources:

Take Action on Weeds: 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