You can build your own window box over the weekend. It just requires a few tools, some patience, and some beginner woodworking skills. Making a window box from wood is a perfect project for a novice. Your choices are cedar or cypruss and both woods are known for their longevity. Building a window box is fun so let’s move straight to some step-by-step instructions on how to do it.
To keep things simple, let’s focus on building a 36″ long window box and let’s use 3/4″ thick Cyprus wood. Cypruss wood stock can be attained from most local lumberyards in a variety of dimensions. For window box purposes, a 1″ x 8″ board is recommended. For this box we will need roughly 12 feet of length. Now, miter the board at 34.5″ three consecutive times such that you have three boards, one for the bottom, front, and back. We’ll use screws to join these boards more tightly.