We have a small back yard, and my wife wanted to grow some vegetables and flowers, so I built her a raised bed garden. The shells are made from cedar and the corners are redwood. To make the corners, I took a redwood 4×4, and cut out a 2 1/2″ square piece out leaving a solid piece for the corner. The bottoms are covered with 1/4″ hardware cloth to keep out the critters, and a layer of landscape cloth on top of that to hold in the dirt. A 3/4″ PVC pipe comes up into each to provide watering. I added some 4×4 steel fencing panel to the back later to allow plants to be tied up.
