Field Guide     Weed Management     Lambsquarters

Lambsquarters (Chenopodium album L.)

Crop Impacts: Corn, soy, other yield crops.

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About Lamb’s Quarters:

Lamb’s Quarters is an annual weed that reproduces via seed only. Lamb’s Quarters is an extremely visible weed, once it begins to grow it is very obvious. This weed can grow to be as tall as 6.5 feet in height given the right conditions. Its stem is smooth and is a green/purple colour. The leaves on Lamb’s Quarters weeds are a triangular arrow shape, but they also have teeth. Lamb’s Quarters Weeds produce a small green flower.

Family: Goosefoot Family (Chenopodiaceae)

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Lamb’s Quarters Scouting and Prevention:

A good way to scout and prevent Lamb’s Quarters from moving in to crops is to take crop counts on a regular basis. As long as random areas are being checked, any signs of the weed will be noticed immediately.

Lamb’s Quarter’s Control:

Glysophate has been known to help control the growth of Lamb’s Quarters in soy and corn crops. Pre and post season spraying can help control this weed; herbicides have also been known to be effective.

Latin / Alternative Lamb’s Quarters Names:

  • - Chenopodium album L.
  • - Chinopode blanc
  • - Fat-hen
  • - Pigweed
  • - White goosefoot
  • - White pigweed
  • - Chou gras
  • - Poulette grasse
  • - Ansérine blanche

Additional Lamb’s Quarters Resources: Dupont Weed Wrecking Crew Dupont Precision Pac Ontario Government Ag American Lawn weeds