Several species of privet have been introduced in the United States since the 1700s as garden plants and hedges. These non-native shrubs, which are difficult to distinguish from one another, include: common privet (L. vulgare L.), glossy privet (L. lucidum Ait. f.), Japanese privet (L. japonicum Thunb.), and Chinese privet (L. sinense Lour.). Chinese privet was introduced around 1952. The Ligustrum species can easily escape cultivation, and they are now established in many parts of the United States.
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