Grand Army Plaza GreenMarket, at Prospect Park West and Flatbush Avenue, on the northwest corner of Prospect Park, sets up every Saturday. This farmers market offers fresh produce, baked goods, fish, wine, dairy and more, in an outdoor environment. Many products are organic. Vendors — some seasonal, some year-round — include Body and Soul, Baker's Bounty, DiPaola Turkeys, Lynnhaven Farm, Evolutionary Organics, the Hudson Valley Duck Farm, Lebak Farm, Blue Moon Fish and Seatuck Fish. There are also family-friendly events and activities. Visit the website for more information.