Window boxes make an attractive addition to any home. Gardeners can enjoy herbs or use window boxes to attract butterflies and other wildlife closer to the home. Many gardeners use attractive wooden window boxes. The biggest challenge with wooden window boxes is preventing rot. There are several steps gardeners can take to prevent rot with window boxes.
Remove the wooden window box from the window attachment.
Using a large drill bit, drill drainage holes in the bottom of the wooden window box approximately 2 inches apart.
Paint the entire wooden window box surface with deck sealer. Allow to dry for approximately 24 hours. Apply a second coat of sealer on the window box. Allow to dry an additional 72 hours.
Fill the bottom of the window box with a layer of small pebbles or rock to increase drainage and reduce moisture damage.
Line the window box with a plastic liner.
Fill the window box with soil medium and plants or return the original planting container to the box.
Reattach the window box to the window.