There are many different types of garden planters, made with materials ranging from wood to plastic, metal or ceramic materials. One simple type of planter is a wooden window box, suitable for colorful flowers or even a small herb and spice garden.
Step 1: Assemble the End Caps
Mark a line around the two 1 x 6 x 8 pieces, 3/4 of an inch in from the edge. The most accurate way to do this is to trace the thickness of one end piece against the other. The two smaller pieces of wood will attach inside the marked lines using 1 inch wood screws. The purpose of doubling the end piece is to give the planter more support. When the end caps are assembled, the side and bottom pieces should fit snugly around the inner piece, and flush against the outer one.
Step 2: Assemble the Pieces
Using the 1 1/2 inch wood screws, attach the bottom and sides to the end caps. Each piece will fit snugly in the lip created by the two pieces of each end cap. Screws should be driven through the ends of the caps into the lumber, and additional screws should be inserted through the bottom and sides (into the inner part of the end cap). This doubling prevents the planter from sagging after it has been hung from the wall and filled with plants.
Step 3: Sanding and Painting
Using the coarser grit sandpaper, sand down all edges and corners. When this is done, use the fine grit sandpaper to smooth the entire surface of the planter. Clean the surface well to remove all dust. Once this is done, paint the planter with a primer coat, and allow it to dry. The painter will require 2 to 3 coats of paint, and should be allowed to dry thoroughly between each coat.
Step 4: Packing and Potting Soil
Place the block of Styrofoam or peat in the bottom of the planter box. A biodegradable material works best, but Styrofoam is often easier to find. This will form an absorbent layer in your planter that retains water and then delivers it back to the plants as the soil dried out. Fill the planter to within 1 1/2 inch with potting soil. Add your choice of plants or flowers.
If you don't wish to build your own planter, you could consider using ordinary items to create interesting planters. A boot planter is one way, and others includes such items as an antique mild urn or a spittoon (or even large seashells). If you choose to create planters out of household objects, one tool that is needed is an imagination!