To build the raised herb garden, the pinner's husband used pressure treated and He built the frame out of the pressure treated wood. He use corrugated aluminum roofing to side the raised beds. To trim the sides, he used cedar fencing.
The back of our lot is sloped. At one point we were going to cover it with gardens too -- I mean, what are we going to do with a hillside? The design shown here, makes a hillside garden seem like a great idea.