A pizza farm is an educational visitor attraction consisting of a small farm on a circular piece of land partitioned into plots shaped like pizza wedges. The farm's segments produce ingredients that can be used in pizza, such as wheat for the crust, tomatoes or herbs, pork for pepperoni, dairy cows for cheese, and even trees for pizza oven firewood. Certain farms may even have access to coal or natural gas deposits that can be used as additional pizza oven heating fuels. Many of the newer pizza farms are experimenting with alternative energy, such as installing wind turbines in the fields, to be more green. According to a 2005 article in USA Today, there are several such farms in the United States.
Source: Pizza Farm