Today we are sharing a simple plan for building a small planter box from two cedar boards. It’s easy to build and is something that can be built quickly. In addition to the two cedar boards, all you need is a hammer (or a power nailer), some 5d galvanized nails and a miter saw. Because the planter is made with cedar, it will last for years. And the best part? It costs less than $10 to build.