The grass tree (Xanthorrhoea australis) belongs to the family Xanthorrhoeaceae. It is an evergreen perennial herb that is native to New South Wales, Australian Capital Territory, South Australia, Tasmania and Victoria. It is the most commonly seen species of the genus Xanthorrhoea. Its trunk can grow up to 3 m tall and is often branched. The long, narrow leaves are crowded together at the tops of the trunks. The cross-section of leaves is a rough diamond shape, and the color of the leaves is a bluish-green. It does not always flower annually, but in the season after a bushfire it flowers prolifically. The flowers appear on a spear-like spike which can grow up to 2 m tall. Grass trees are often very long-lived with some are estimated to be 350 to 450 years old.