Chrysopogon argutus, commonly known as Rough Beard Grass or Silver Bluestem, is a perennial grass that is native to Madagascar and Mauritius. It typically grows at a moderate rate to a height of 3-6 feet (0.9-1.8 meters) and a width of 1-2 feet (0.3-0.6 meters). This species is characterized by its upright clumps of narrow, arching leaves and its silvery-white inflorescences that appear in the summer and fall, although the flowers themselves are relatively inconspicuous.

Rough Beard Grass is valued for its textural foliage and the silvery hue of its flower spikes, which can add visual interest to a garden. It is often used in naturalistic plantings, as an accent in borders, and for erosion control due to its clumping growth habit. This grass is drought-tolerant once established and can thrive in a range of soil types, though it prefers sandy or loamy soils with good drainage. It requires full sun to maintain its best form and vigor. While generally low-maintenance, it can self-seed and may require management to prevent unwanted spread.CC BY-SA 4.0