Wheat grass is often grown in plots and juiced into wheat grass shots that are high in chlorophyll and vitamins. But like any grass, wheat grass plots are prone to spreading beyond their original borders--especially if they are not harvested before they set seed. Whether you want to rein your wheat grass in so that it stays in its plot or you want to get rid of your wheat grass for good, you'll find it easy to remove this annual grass.
Water the soil the day before you intend to remove the wheat grass. This will make the soil easier to dig.
Use a spade with a sharp, flat edge to dig up the wheat grass and the inch of soil just beneath it.
Sprinkle 3 oz. of corn gluten meal per 10 square feet over the former wheat grass patch as soon as you notice any wheat grass seed germinating. Water the area with 1 inch of water. Then withhold water until the top inch or so of soil remains dry for several days. The corn gluten will prevent the remainder of the seeds from germinating and dehydrate the existing seedlings without harming any desirable wheat grass patches nearby.