Building a planter box is a fairly simple project, even for a do-it-yourself novice. Planter boxes may be used in a container garden or as an accent on a porch or deck. Herbs, small shrubs and flowers may be planted in containers. Building a container box yourself allows you customize the size, style and color.
Select 1-inch by 2-inch cedar strips for the frame of the box. Using a saw, cut these strips to the desired length to create your box.
Lay the shorter strips on a work table or on the ground and then lay the longer strips outside the shorter strips, so that the end of the shorter strips are butting against the longer strips.
Place a dot a wood glue on the end of each short strip and press the long strip against it. Drill a screw through the long strip into the shorter one to secure the frame.
Secure the side panels by putting a dot of wood glue on each of the outside corners of the frame. Affix the side panel and then use a drill to secure the panels at each corner.
Secure the end panels by putting a dot of wood glue on each of the outside corners of the frame. Affix the end panels and then use a drill to secure the panels at each corner.
Predrill several holes for drainage into the bottom panel and then affix the bottom panel to the inside of the frame using wood glue. Reinforce with screws.
Finish the box by lightly sanding and staining or sealing.