Use measuring tape and pencil to mark cut lines on wood planks according to your desired planter dimensions.
Cut the wood planks carefully with a saw, ensuring straight and clean edges.
Sand all cut edges and surfaces thoroughly to prevent splinters and ensure smooth finish.
Position the side panels to form a box shape and drill pilot holes before screwing them together with the drill.
Attach the bottom panel to the assembled sides, ensuring all corners are square and secure.
Apply a weatherproof wood stain or outdoor paint to protect the planter from the elements, and let it dry completely.
Line the interior of the planter with landscape fabric to prevent soil from leaking out and to protect the wood.
Staple or glue the fabric securely along the edges, ensuring full coverage.
If drainage is needed, drill several holes in the bottom panel before assembly.
Place the finished planter in your desired location, fill with soil, and plant your favorite plants.
Check for stability and add additional support if necessary.
Regularly inspect and reapply stain or paint to maintain weather resistance.