Barnyard grass is a common weed found in fields and pastures. It is also known by several other names including water grass, barn grass, and swamp grass. In some parts of the world, it is called the Japanese millet or spring grass. Barnyard grass can grow up to five feet tall and has a distinctive seed head that resembles a turkey's foot. This weed is difficult to control and can quickly become problematic in agricultural settings. Farmers often use herbicides or cultural practices to manage barnyard grass, but it can be challenging to eradicate completely. Despite its undesirable qualities, barnyard grass does provide food and habitat for wildlife such as birds and small mammals.