An evergreen shrub. It grows 3-5 m tall. The leaves are sword shaped and have needle like spines at the ends. The leaves occur in dense rings around the stem. The leaves are 50 cm long. The old dry leaves hang down near the stem. The flowering cluster is cone shaped and 50 cm high. The flowers are bell shaped and creamy white. They often have purple streaks. Old plants can bend over and send up shoots forming clumps.