Sour Grass

Sour grass is a fast-growing grass that has become invasive within its native and introduced ranges. It invades annual and perennial crops including soybeans, maize, cotton, sunflowers and pineapples. In pastures it displaces more desirable species and is unpalatable to livestock. Sour grass is known for its resistance to herbicides. Its fluffy seeds are spread by wind and as contaminants on farm equipment, vehicles and livestock.