Genus Mulenbergia Species capillaris Common Name Muhly Grass Zone 6 to 10 Habit Clumping grass. Moderate to fast growth rate. Height 2 to 3 Feet Spread 2 to 3 Feet Foliage Blue/green needle like. Deciduous. Flower look like a purple cloud from far away., Plumes in fall Flower Color Purple. Culture Full sun. Categories: Native Ornamental Grass Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window) Description Absolutely one of the most beautiful ornamental grasses around.