Create a sense of privacy in your courtyard walled garden by installing a lattice privacy screen. This decorative element not only adds a touch of elegance to your outdoor space but also provides a barrier that blocks the view from outside. You can choose from various designs and materials, such as wood or metal, to match the style of your garden. Additionally, you can enhance the privacy screen by adding climbing plants like jasmine or ivy, which will grow and cover the lattice, creating a natural and beautiful barrier.