This plant has grey, sharp-tipped, strap-like leaves which form rosettes about 1.8 m wide. Its common name is Century Plant, due to the mistaken belief that it only flowers once every 100 years. In fact, after 10 years, it produces pale yellow flowers on a very tall, branched stem. Its spread is mainly vegetative, with new plants arising from stolons and from dislodged plant fragments. Commonly naturalized around old rural homesteads and coastal shacks, it has spread to form dense, impenetrable thickets along roadsides and in coastal vegetation.