A member of the grass family growing 2-4m in height and robust and evergreen. Leaf blades are up to 1,8cm long and 5-7cm wide. They are V-shaped in cross-section and bluish green in colour. The upper surface is smooth at the base, but the tips are bristly and curled. The leaf edges are rough and sharp. Flowers consists of dense, feathery, 1-1,2m tall panicles that are light violet to cream or silvery white. The roots can spread to 4m in diameter and 4m in depth.