This grass is said to draw love and well as to keep a lover and command him or her. A candle rolled in Dog Grass is moved apart from another rolled in Catnip to break up lovers. It’s name ‘Twitch Grass’ is derived from its use in cursing enemies with nerve disorders, allegedly causing them to twitch. Couch Grass is a fine example of how the very same ingredient used to harm is useful for healing. Also, note how this same plant, when referred to by different names, has different uses.