CEMENT PAVER PLANTER BOXES: All you need are a few - pavers, - landscape-block adhesive, and a little time. Wait 24 hours for everything to cure and you're ready to move your new planters into place and fill them with dirt and greenery.
Good idea for no digging in my rock solid ground. Do not cover the holes but use them for herbs and annuals. line with weed barrier cloth and used rebar in several places for stability. I love it and makes maintenence super easy.