Muhlenbergia or pink hair grass is a clumping, warm season, perennial grass that is noted for its  wonderful summer foliage and gorgeous clouds of fall flowers. Glossy dark green leaves and stems are thread-like that form a clump that is 2ft tall. Fall flowering is what sets this grass apart from the others. Tons of open, airy, loosely packed pink to pinkish-red flowers float above the foliage in a long fall bloom. Beige seed fluffs remain attractive in winter. Plant grows 3ft tall and wide when in flower.