Known as Northern Sea Oats, this is one of the few shade-tolerant ornamental grasses. Upright form with dark green leaves that turn copper in fall. Awesome drooping seed heads flutter in the slighest breeze. May self seed, but hardly to the point of being invasive.. Mature Size: 2′-5′ x 18″-24″ after 1 years. Full Sun (6+ Hours), Morning Sun Afternoon Shade.