HEIGHT: Lower beds are much less function to build and fill, but demand double digging to prep soil beneath the mattress. High beds suggest fewer digging and less stooping, but want a lot more soil and making materials. Eleven inches is a standard top: that’s two 2x6s stacked on edge. https://holdenumevm.westexwiki.com/702630/not_known_details_about_cedar_for_raised_garden_beds