If you are looking for a tall screen you may want to consider an evergreen tree. Many of the hollies reach 15 - 25 feet in height, and female selections provide some color with bright red winter berries. Some of the hollies you may want to check out are Nellie R. Stevens, luster leaf, Foster and Yaupon. Other screen trees include Southern Magnolia, Deodar Cedar, and Live Oak. Large evergreen shrubs can also be used as screens.
Shrubs come in many different shapes sizes and colors.
Burford holly, Fortunes tea olive, star anise, florida anise, camellia Japonica, camellia Sasanqua, and Chinese loropetalum are but a few of shrubs that can be used as screens. Another source of screening material which is often overlooked is the vine. Vines can quickly cover most fences, including chain link fences. Don't be afraid to mix a wide variety of vines together on the same structure. For example, a mixture of carolina jessamine, Chinese trumpetvine, and trumpet honeysuckle will provide multiple season flowering and an evergreen screen.