Species of privet (Ligustrum spp.) are popular horticultural plants due to their tolerance of a wide range of soil, sunlight, and moisture conditions. However, as with most invasive plants, the same characteristics that make privets popular ornamentals enable them to escape cultivation, establish in and degrade natural areas as well
Although species of Ligustrum are native to several continents, two species from Asia are considered invasive and are of particular concern in the Southern United States. Chinese privet (Ligustrum sinense) and Japanese privet (Ligustrum japonicum) are members of the Oleaceae (Olive) family and are perennial shrubs. They are characterized by glossy, evergreen leaves, aromatic white flowers, and blue-black berries. Their dense foliage makes them a popular choice for hedges and other ornamental uses. They are commonly planted near parking lots, sidewalks, building foundations, in home gardens, patio containers and as topiaries.
While home gardeners and commercial landscapers are attracted by privet's sturdy nature and low maintenance requirements, horticulturists may be unaware of the negative impacts that privet has on the biodiversity of natural landscapes. Ligustrum is spread to new areas through the transport of seed by wildlife, particularly birds. Once established in the uncultivated landscape, species of privet form dense, impenetrable stands that crowd, out-compete and degrade native plant communities.
In the southern United States there are many native plant species that can be used in home gardens and commercial horticulture as alternatives to Ligustrum spp. Native alternatives include but are not limited to:
