We’re showing you two planters of different lengths, but you can adapt them to fit your unique space. You can even change the width by nailing a treated 2x2 to the side of the 2x12 base piece to accommodatea slightly wider pot.Buying the right lumber
You’ll notice the legs are treated pine and not cedar like the sides and top apron. Treated pine is less likely to split along the grain (a nasty problem with cedar). Pick treated 2x12 material for the legs with as few large knots as possible. You’ll be able to cut around knots on a single board, so bring a tape measure when you select the lumber. Choose straight cedar for the sides and remember that some knots here can add to the overall beauty.
Feel free to use other species of wood such as redwood, cypress or even a plantation-grown tropical wood like ipe (available at some lumberyards).
Clamp the upper sides flush to the tops of the legs. Be sure to align the upper and lower side ends before drilling and screwing this piece in place. Again, use three 2-1/2 in. deck screws per leg. Next, screw the upper end panels (D) to the upper sides. Make sure the chamfers face each other on each side.
We chose an exterior enamel paint for the legs and apron pieces to accent the deck oil stain/sealer on the base and sides. Stain is a better choice than paint for the base and sides because they’ll be exposed to more moisture than the legs and top. This photo shows the excellent results you can get by staining the entire project with an exterior oil deck stain.