The laugh was loud and long but the astonishment expressed at the beauty of the blooms lasted for many a long day.: As has Fort Fairfield, Maines four day Potato Blossom Festival, held in July for the past five decades. The celebration, known for its impressive parade of farm machinery, also includes a road race, a recipe cook-off, mashed potato wrestling and, dare we say, the inevitable Maine Potato Blossom Queen pageant.