Implementing urban agriculture often requires change in the physical, political, and social-organizational landscape. Beginning with a look at how and why city people grew their own food in the early twentieth century, the contributors to Cities of Farmers examine the role of local and regional regulations and politics, especially the creation of food policy councils, in making cities into fertile ground for farming. The authors describe how food is produced and distributed in cities via institutions as diverse as commercial farms, community gardens, farmers’ markets, and regional food hubs. Growing food in vacant lots and on rooftops affects labor, capital investment, and human capital formation, and as a result urban agriculture intersects with land values and efforts to build affordable housing. It also can contribute to cultural renewal and improved health.