One of the easiest ways to make a new garden bed harnesses the natural forces of the sun, weather, and earthworms to transform bare turf into rich, plantable earth. Once you layer cardboard, newsprint, and compost on top of the turf, and wait several months, the turf decomposes into 6 to 8 inches of topsoil. Build the bed at the beginning of one season and it should be ready for planting by the next season. For example, pile up the layers in early spring; the ground will be plantable by summer. No digging; no sweat.