This raised bed garden design, although small, produces so many vegetables. I cared for this garden for about six weeks over a hot summer and the plants did not stop growing even though the weather got into the 40's at times.
It may look small but it was packed with plants and they all grew well.
The sides are made from a flexible green plastic which you can mould to any shape. This was particularly important for this site as they were short of space and cleverly created more by arching the edges.
As it was summer water restrictions were in full force so it wasn't possible to give the garden as much water as I thought it may need. It was very impressive to see it was able to stay moist the entire time as the raised garden bed design kept the garden moist and the sun off the plants.