Window boxes are semi-permanent container that hang from your balcony or window, which can be planted with vegetables or flowers. Window box plantings might comprise hanging vines or colorful flowers and allow those with little or no gardening space to have a little bit of nature outside their home. Building a window box is simple, uses only a few pieces of material, and is an inexpensive way to make a small garden.
Measure your window area and determine how large a window box you need. Plan your box out on a piece of paper, plotting its depth and width. You will require two pieces of wood for the front and back of the box, one piece for the bottom, and two side pieces that match the width of the bottom piece, says home guru Bob Vila. Allow the width of the lumber purchased determine the depth and width of your window box, or saw wood pieces down to size.
Pretreat the wood of the window box with water repellent, recommends Tim Carter of the online resource Ask The Builder. This prevents the box from rotting in the rain.
Pre-drill holes into each corner of the front and back pieces, as well as the bottom piece. Drill one or two holes for drainage in the bottom piece of the box.
Glue the side pieces and bottom piece to the front and back pieces to hold it in place, Vila advises. Attach the pieces using 1 1/3" galvanized screws, placed into the predrilled holes.
Stain the box using exterior-grade primer, then paint the box with an acrylic paint, This makes the box attractive and prevents weather damage to the box, says Joseph Truini with "Popular Mechanics" magazine.
Attach the box to the window sill using hooks, or attach brackets to wall of the house, securing it to the box using screws.