Greg Peterson's 1950s tract home looks like any other house on his block in Phoenix, with one notable difference: Practically everything in his yard is edible. Mr. Peterson calls his oasis of bounty on one-third of an acre The Urban Farm." Once an anomaly among the manicured lawns in his neighborhood, Peterson's place has been so convincing an example over the past decade that scores of other suburban dwellers have traded decorative bushes for raised vegetable beds and straw-filled chicken coops. Slowly, across the past decade, more Americans like Peterson have been proving that growing and preserving food is possible in all kinds of populated settings. Whether it is a tilapia farm in garden tubs in Kansas City, Mo., beekeeping in Chicago, or jars of homemade pickles in an apartment pantry in Austin, Texas, urban homesteaders are rebelling against the industrial food system by shouldering more of the responsibility for producing their own food. "There is a population and culture that is finally saying that all this processed stuff is not good and the only way we can guarantee that food we use is safe is to grow it ourselves," says Joyce Miles, a family and consumer science expert. These advances come in the midst of a struggling economy, a changing climate, a global food system in peril, rising food prices, concern over lax food safety, and dwindling resources. For homesteaders, cultivating a corner of the yard ... into a tangle of edible things has become one small way to regain purpose and control in an unpredictable time.