A pair of 4-by-8-foot beds at 10.5 inches deep in 1/2-inch North American cedar. Buying the two together is how most people end up laying out a vegetable garden anyway.
Two frames rather than one long one is what makes rotation legible: this bed had roots last year, that one had legumes, and next spring they swap. Parallel with a path between, everything stays reachable without stepping onto the soil.
Greenes Fence has been building cedar garden structures in Ohio since 1947, working with North American timber.









