Bamboos are woody reed-like grasses that have a shrubby growth habit. The three species featured here are popular ornamentals that were introduced and planted widely but other species and cultivars are also available in the nursery trade. These species have been reported by numerous sources as being invasive in natural areas (see below). Giant or switch cane (Arundinaria gigantea) is the only species of bamboo native to the U.S. It is found throughout the Southeast just into southern Maryland and is about the size of Pseudosasa.