Installing deck railing planters is a great way to add gardening space. And, as Kurt and Marcia demonstrate here, you'll beautify your home exterior in the process. They chose the Hampton Rail Top Planters made of durable composite PVC, which is essentially maintenance-free and can be potted directly. The clean, white finish resembles painted wood, but this planter material will never split, rot or peel. And no seasonal sanding, scraping or resurfacing is required. Plus, the mounting process for railing planters requires no hardware. Simply choose the size fitted to your rail, place it on top and fill with soil and plants. The overall weight keeps everything securely in place.