For a modern and sleek look, consider using metal screens as courtyard garden dividers. These screens can be customized with intricate patterns or designs, adding a unique touch to your outdoor space. Pair the metal screens with ornamental grasses like Carex or Festuca for a soft and natural look. The grasses will provide a lush backdrop against the metal screens, creating a beautiful contrast. Additionally, the screens can also serve as a support for climbing plants, such as Clematis or Honeysuckle, adding even more greenery and color to your courtyard garden.