And that's especially true of plain outdoor walls that seem to beg for extra oomph. Regardless of what wall you have, make the most of a plain wall by turning it into a happy place for plants .

Create architectural interest on a plain wall by using 4- to 6-inch-wide pieces of MDF wainscot paneling applied in a grid pattern, then paint it all a very rich, dark hue.

The sides (or walls) of the groove must be substantially plain and planar. This disallows features such as bends, indentations in or protrusions from the wall. The base of the groove must also be ...