For procastinators (myself included), there is now no excuse not to put in that raised garden bed. Scout Regalia in LA has put together a stylish hardware kit complete with instructions; you supply the wood, plants, and labor.
Above: Scout Regalia Raised Garden Kit; $95.
Above: Scout Regalia Patio Garden Kit; $105.
Above: The Patio Garden Kit comes with powder coated heavy gauge steel brackets and a drainage mat made of 40 percent post industrial recycled content to drain soil. (N.B.: This is an update of a post originally published April 28, 2010.)
For more inspiration, see 142 images of Vegetable Gardens in our Gallery of rooms and spaces.