The ancients used raised bed gardening as a technique to provide food for their people. Myabe we can learn something from the ancient people.
“”Raised fields — an ancient form of agriculture, practiced by the Mayas, Aztecs, and the ancestors of the Incas — was one of the most productive preindustrial farming systems anywhere. These fields were abandoned in most areas centuries ago, and largely forgotten. In the 1980s archaeologists excavated ancient raised fields around Lake Titicaca in the Andes. Based on their findings, modern rural peoples started rebuilding raised fields. They turn out to be well adapted to the natural and social systems of the Titicaca area. …Wide Urban World”