Portland has long been a center of ad-hoc urban agriculture. For many decades, Portlanders have grown vegetables in their backyards. Over the past 30 plus years, community gardens have sprung up where people without adequate yard space can also garden. And now an increasing number of folks are raising livestock in town as well. The City of Portland has supported in theory this booming movement of farmers' markets, community gardens, backyard farming, community supported agriculture and food buying clubs. But zoning code regulations have not kept pace and in many cases are cumbersome or contradictory.