Creating wooden plant pots allows you to add uniformity to your garden that can't be accomplished with ceramic or plastic pots. Fashion simple wooden containers in various sizes, to accommodate many different-sized plants or pots. Plant directly into the wooden container or just drop a plastic container into the wooden pot.
Cut two pieces of wood, 7 inches long for the sides of the wooden plant pot. Cut two pieces of wood 8½ inches long for the front and back. This will accommodate a 6-inch pot, if you decide to drop one into the wood container rather than plant directly into it.
Glue the two longer pieces of wood over the ends of the two shorter pieces. This will create a rectangular shape, resembling a frame. Allow the glue to dry for several hours.
Screw the wooden plant box frame together. Use galvanized screws (rust resistant) if the planter box is to be used outdoors. Use at least three screws per end. Using your drill and screwdriver attachment, screw the screws evenly across the longer board ends and into the sides of the shorter boards, to secure the frame structure.
Measure the outside of the wood frame. Mark these dimensions onto a piece of plywood. Cut around the markings.
Spread glue over the top edges of the wood frame. The frame is the same on both sides, top and bottom. Place the plywood over the glue. Let it dry for several hours.
Attach the plywood securely to the wood frame with screws, about every 4 or 5 inches. The screw should go through the plywood and into the sides of the frame.
Drill holes through the plywood with your bit attachment and your drill. This will make sure the water exits the wood plant pot and does not puddle at the plant roots. Turn the wood pot right-side-up, so the plywood is at the bottom.
Brush on a coat of clear polyurethane sealer or paint, inside and out. If the pots are to be used outdoors, select a product specifically meant for exterior use.