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Lasagna mulching is another technique that essentially smothers large sections of nut grass or other weeds, and experts say it’s effective at eliminating those plants.

Our ancestors may have recognized purple nutsedge — today commonly known as nut grass — for its medicinal properties, said Karen Hardy, study author and Universidad Autònoma de Barcelona archaeology professor.

There is a grass called nut grass, and another called Parramatta grass, either of which holds its own against anything living or dead.

Even nut grass has nutty little balls on its roots, which Kent enjoys munching when he pulls them from his garden.