common tule, giant bulrush
Also called giant bulrush, this large bold plant can form massive colonies on the edges of wet areas. Native to freshwater marshes, lakes and stream banks throughout lower elevations in California and much of North America. Vertical, thick, round, leafless stems grow 12 to 15 ft. tall and spread underground. In large landscapes it can be used as a pond or riparian plant where it will form dense thickets. Can be grown in containers for smaller gardens, set just below water level for a dramatic vertical accent. Plant in full sun with regular water. Provides good habitat for wildlife.