Pleioblastus is an East Asian genus of monopodial bamboos in the grass family Poaceae. They are native to China and Japan, and naturalized in scattered places in Korea, Europe, New Zealand, and the Western Hemisphere. The plant spreads by vigorous underground rhizomes which run along just beneath the soil surface, producing plantlets at the nodes. These can be used to propagate new plants, but if not removed they can become invasive. Genetic research suggests that this genus may properly be part of the genus Arundinaria.