Accentuate the positive. Like interiors can benefit from accent walls, the garden can certainly benefit from a strong vertical design element, like a wall. Perforated strips of copper have been installed in a horizontal pattern to create a dimensional panel at the edge of this patio. It serves as a work of art, a privacy wall and a major focal point in the garden. Because the rest of the palette elsewhere is mostly black and neutral, the copper takes on a warm glow that infuses the space with interest, character and a point of view.More: What to Do in Your Garden Now