This is a grass known as Inland Sea Oats. It grows in fairly shady conditions (for a grass) in and around woodlands. Inland sea oats is an attractive native grass that grows anywhere from 2 to 4 feet tall. It spreads quickly and has the capacity to form large colonies making it great for erosion control. In the summer is makes seed heads that droop to the side like oats. In winter the whole plant turns a golden brown color which some people find attractive.