Sure, there are many green markets open around the five boroughs throughout the year, even during the doldrums of winter. However, the return of spring is truly a time to enjoy some fresh air and browse the week’s selection of fresh, local produce. Thankfully, the non-profit GrowNYC organizes dozens of great green markets, redoubling their efforts this time of year, as some of the dormant participants look to make appearances once again. Here are five of the best-rated NYC green markets.   Union Square   17thStreet and Park Avenue South    Open Mondays, Wednesdays, Fridays and Saturdays from 8am – 6pm Not only is the Union ...