Home Improvement Ideas Home Exteriors Curb Appeal Ideas, Makeovers and Photos How to Install a Window Box Add curb appeal by installing flower boxes (ready-made or from a kit) to your windows. Learn how to do it in three easy steps. By Caitlin Sole Caitlin Sole Instagram Caitlin Sole is the senior home editor at BHG. She is a writer and editor with nearly a decade of interior design expertise. She has vast experience with digital media, including SEO, photo shoot production, video production, eCommerce content, print collaboration, and custom sales content. Learn about BHG's Editorial Process Updated on June 22, 2022 Share Tweet Pin Email Project Overview Total Time: 2 hours Skill Level: Beginner Window boxes add charm to any exterior window. Not only do they give windows a nice finish, they also bring gorgeous flowers up and into view from inside the home. Once they're installed, each year is a new planting possibility. Learn how to install a window box on your home's exterior for quick curb appeal. What You'll Need Equipment / Tools 1 Marker 1 Measuring tape 1 Saw 1 Stud finder 1 Power screwdriver 1 Handheld screwdriver Materials 1 Pressure-treated 1x8-foot board cut to desired length 1 Painters tape 2 Brackets 2 Corbels, optional 1 Hex screws 1 Planter box 1 Potting mix and plants, as desired Instructions Attach Board to Studs To install a wooden window box with brackets, first cut a pressure-treated 1x8-foot board to the length of the window box minus two inches. Attach the wood board to studs. The bottom of the window box will be half an inch below the bottom edge of the board—decide on the height of the board based on where you want the bottom of the window box to sit.Editor's tip: For the best visual effect, your window box should be at least as wide as the window but should not extend more than three inches beyond the trim on each side. Attach Brackets and Corbels Attach brackets six inches in from each end of the wood board to hold the box. For architectural flair, add decorative corbels (painted or stained the same color as the window box) to the bottom of the brackets. Secure Window Box Set the box into the brackets, making sure it is seated properly before planting into it. Fill the window box with high-quality potting mix; add plants. For a dynamic window box look, go for a mix of tall and trailing plants for a variety of heights and textures. Related: 19 Colorful Window Box Ideas and Plant Combinations for Sunny Spots