Fenway Farms, located atop the stadium that is home to the Boston Red Sox, is helping to transform the city's food system by introducing urban farming to more than 500,000 visitors a year. "We can produce anywhere from 4,000 to 6,000 pounds of fresh produce a year, depending on what we're growing," says Chris Grallert, president of Green City Growers which has operated the farm since 2015. The garden uses a modular growing system with soil-filled lined milk crates. Dishes served at the ballpark use fruits, vegetables and herbs grown in the garden, reducing its produce purchases by roughly 20% a year. Anything extra, along with produce from a smaller section at the neighboring Vineyard Vines deck, is donated to a local charity called Lovin' Spoonfuls. Fenway Farms is one of 200 gardens and farms (including at 40 Boston public schools) run by a staff of 30 at Green City Growers since 2008. Fenway Farms also cools the building in the summer and insulates it during cold Boston winters.