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He ate dandelion greens, birch bark, pigweed, wild onions, mushrooms, grass seed, watercress.

She spots amaranth and caresses the diamond-shaped green leaves, commonly known as pigweed in English.

But it wasn’t until his father died in 2009 and Nicolet began managing the farm that the pigweeds began to threaten large swaths of his land.

However, farmers who plant dicamba-tolerant soybeans and cotton say they need the chemical to combat pigweed, which has grown resistant to other herbicides.

In 2005, a type of pigweed, Palmer amaranth, was found on a farm in Macon County in Georgia that was resistant to glyphosate.