Privet hedge is a favorite, fast-growing border shrub. However, privet hedge is very tolerant of frequent trimming. This allows you to control the height and shape of the bush easily. Trimming privet hedge several times during the summer will result in a thicker shrub. A row of dense privet hedge can function as a living privacy wall. Privet hedge can be planted as a windscreen. It can also serve as a noise barrier. This feature is quite helpful in urban landscapes where privacy and quietness are often compromised due to the proximity of houses and excessive street noise. There are various types of privet hedge. The hardiness zone differs among varieties.