A perennial, tufted grass native to south-eastern Australia, Enneapogon nigricans produces slender green leaves and distinctive dark, cylindrical seed heads that appear in summer. It thrives in well-drained soils across grasslands and open woodlands, preferring full sun.
 
Bottlewasher Grass is valued in native gardens and revegetation projects for its drought tolerance, soil-binding roots, and provision of habitat and food for native fauna.