Borders, especially in the corners of the property, often should be taller near the center and taper to the ends. Leave spaces between borders to avoid monotony and create windows to enhance views. However, borders don't have to be tall. For example, a low border can be used to separate a driveway from the lawn. It can serve to direct foot traffic.
Screens are groupings of plants used to hide or cover unwanted views or objects.
Evergreen plants are an important part of screens, but they should not be the only plants used. Add deciduous plants for variety in color and texture. The screen needs to be at least 6 feet high to be effective. Landscape plants should be arranged in defined, mulched beds. Planting beds should have either straight or gradually curving lines to make maintenance easier and to make them useful to easily direct the eye.