The Marietta Square Farmers Market opens its summer season 9 a.m. to 12 p.m. Saturday through Nov. 17, and noon to 3 p.m. Sundays starting April 15. The Saturday market on North Park Square will include 60 vendors selling produce, cheese, baked goods, eggs, milk, flowers and local honey. The smaller Sunday market will operate on Mill Street. Information: www.mariettasquarefarmersmarket.net.