Find a Greenmarket in your area:

Go to NYC's Council on the Environment, CENYC's website for a full listing by neighborhood.

Learn more, Do more, Eat more:

Just Food (great information on how to find a CSA to join)

Slow Food NYC

Sustainable Table

Heritage Radio Network

Edible Communities Magazines (check out the Manhattan, Brooklyn, Queens, East End, Jersey, & the Hudson Valley issues to name those closest to NYC)  

Local Farms worth checking out and supporting:

Greenpoint Rooftop Farms

Brooklyn Grange

Queens County Farm Museum

East New York Farms