Is Square Foot Gardening intended only for raised beds?
No, although many people prefer raised beds, square foot gardening can be achieved in raised or unraised beds. The basic premise is that the garden is built up as a series of squares 12 inches by 12 inches. In Mel Bartholomew’s book “Square Foot Gardening”, he suggests that the 1-foot squares be grouped together in a square 4 ft. by 4 ft.