Purple Threeawn is a native perennial bunch grass of North America, but is short lived. It lasts longer than an annual, but not as long as other perennials, depending on care. It spreads by seed and can overwhelm a space if not controlled. It is very drought tolerant.
It has a very soft, feathery look. The stalk is tinted purple and moves in waves in the breeze. It is a striking bunch grass and softens the look of the desert wildflower fields, providing background for wildflowers.
It is native across the southern United States.