Although grown as a meadow grass in northern United States regions, Oat Grass is extremely invasive and is naturalized throughout North America. The less invasive variegated type is most commonly grown. Flat-leafed grass grows 2 to 5 feet in clumps and forms onion-like bulbs that root readily.
Smaller and less vigorous than others of the species, it grows fountain-like in borders or rock gardens. Flowers are purplish or pale green. Divide often to keep robust.