Fallopia T.
Yelp
The Tompkins Square greenmarket runs on Sundays year-round, although they're pretty skeletal in the winter.
Now that spring has officially sprung, we're starting to see more of the regular vendors. There's a meat vendor, a fish vendor, and a bakery (Meredith's Bread) that uses nonfat dry milk in all their products, so usually I can only buy stuff from Bread Alone and Norwich Meadows farms, which I'm anxiously awaiting; they arrive usually in late spring and sell through the harvest season. They sell organic produce and also bring down products from farms local to them, like yogurt and other prepared goods.
There is also Toigo Orchards, based in Pennsylvania, and they're some of the nicest people around. They have beautiful apples, pears, and peaches, as well as chemical-free hothouse tomatoes well before the actual tomato season. They also can and bottle their fruit for juices, sauces, and pie fillings.
Being that this market is a block from my house, I'm just happy to have it so close. They also have a city-sponsored compost collection, as well as clothes/textile collection site, where I occasionally unload my castoffs.