Panicum hemitomon is a species of grass known by the common name maidencane. It is native to North America, where it occurs along the southeastern coastline from New Jersey to Texas. It is also present in South America. This grass sprouts from the rhizome in the winter and grows over the course of the year. It is most dense in summer and fall. The aboveground parts die and break off, forming floating mats. Then the rhizome becomes dormant.