Acorus gramineus, commonly known as Grassy-Leaved Sweet Flag, is an evergreen perennial valued for its bright grass-like foliage. Native to East Asia, it forms dense, spreading tufts of narrow, glossy leaves that emit a subtle aromatic scent when crushed. While it occasionally produces tiny, inconspicuous flowers in late spring, it is primarily grown for its clean, structural groundcover texture. Exceptionally moisture-tolerant, it thrives in wet or boggy soils, adding year-round color to water features, shady borders, and container displays.