Like many invasive species, Japanese barberry was introduced to the United States as an ornamental. Its hardy nature and red berries made it an attractive addition to landscapes in the late nineteenth century. Unfortunately, those qualities also allow it to spread voraciously beyond garden boundaries and into nearby natural areas. Unappetizing to deer because of its thorny stems, barberry is left unchecked and quickly takes over -- pushing out native plant species and severely reducing the amount of wildlife that can live in an area. Additionally, research shows that a barberry's dense foliage creates a perfect, humid climate for blacklegged ticks that carry Lyme disease -- a fact that also creates a public health risk.