Trellises are a great option for courtyard garden dividers, especially if you want to incorporate climbing plants. A trellis provides vertical interest and can be used to create a living wall of greenery. You can choose from various materials for your trellis, such as wood, metal, or vinyl, depending on your desired aesthetic. Climbing plants like clematis, jasmine, or ivy can be trained to grow on the trellis, creating a lush and vibrant divider. Trellises also offer a sense of enclosure without completely blocking the view, making them ideal for smaller courtyards.