Planter boxes allow you to grow flowers in a variety of places, including in front of windows, along walkways, on patios, or almost anywhere you have space. By making your own planter boxes, you can fill odd-shaped spaces and ensure that the planter matches the decor of your home or business. You can either fill your planter with potting soil or simply place potted plants in the planter.
Measure the width of the area where you will place the planter box. If it is a window, measure the width of the window. If the box will be placed along the side of a porch, measure the width of the porch. If you are planning on putting the box in a confined space, it isn't a bad idea to subtract an inch or two from your width measurements to ensure that the box will fit.
Cut the front and the back of the window box out of 1-by-6 lumber to the desired length of the window box with a hand saw or power saw.
Cut the bottom of the window box from 2-by-8 lumber to the desired length of the window box.
Hold the wood for the front and back against the wood for the bottom and measure the overall width. Cut two end pieces from 1-by-6 lumber to make the front and the back of the box.
Hold the wood for the front of the box and drill a pilot hole for screws on either end. Pilot holes help keep the wood from splitting when you screw the two pieces together.
Apply a thin layer of wood glue along the front edge of the bottom piece and screw the two pieces together using the pilot holes.
Drill pilot holes for more screws between 6 and 8 inches apart and add screws for strength. Between the screws and glue, you should have a very strong joint.
Do the same for the piece you cut for the back.
Hold one of the side pieces in place and drill a pilot hole in each of the four corners. Apply a thin layer of glue to the edges of the lumber on the end of the planter box and screw the side in place. Drill another pilot hole between the screws securing the side to the front, back, and bottom and add another screw for strength.
Do the same for the other side piece. Once this piece is installed, allow the glue to dry for 12 to 24 hours.
Paint the planter box as desired.