The Root Farmers, a trio who plays rural American music, performs on Sunday, June 21 during a free concert at Bushnell Farm, 1445 Boston Post Road, Old Saybrook. The farm’s 22 acres and eight buildings will open to the public at 3 p.m., and the concert will run from 4:30 to 6 p.m. Bring a chair or blanket. For more information, call Brenda Milkofsky at 860-767-0674.