Upright cool season annual that grows 2-5 feet tall. Has fibrous roots; hollow, straight stems; and narrow tapered leaves. Winter oat types are the least winter hardy of all the small grains, are not widely available, and require vernalization to head and produce seeds.

Managing Cover Crop Profitably Book CoverOats: Managing Cover Crops Profitably (SARE Handbook Series Book 9) by Andy Clark (2007, 3rd ed.)