Couchgrass is found in Europe and is now grown in the United States.
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Couchgrass is used in the treatment of cystitis, urethritis, prostatitis, upper respiratory conditions, gout, rheumatism, and cough. It is also used as an irrigant to treat urinary tract disorders with inflammation, as a demulcent and antimicrobial, and to prevent renal gravel. The juice of the roots is used to treat cirrhosis of the liver, and some species are used to treat tumors and cancer. Couchgrass is not commonly used today.
