Perennial fountain grasses are ornamental grasses known for their graceful, arching foliage and soft, feathery plumes that add texture and movement to landscapes and garden beds. These warm-season grasses form elegant mounding clumps that provide seasonal interest from summer through fall and return year after year in the right climates. Easy to grow and low-maintenance, perennial fountain grasses work well in borders, mass plantings, containers, and mixed perennial designs.