Nutsedge is a perennial plant that is considered a weed by most gardeners. It is also known as chufa, earth almond and tiger nut sedge. There are many synonyms for this troublesome plant, including yellow nutgrass, water grass and nut grass. It is an invasive plant that spreads quickly and can quickly take over lawns and gardens if left unchecked. Control options include hand pulling, mowing, and the use of herbicides. Gardeners should be diligent in their efforts to control nutsedge in order to maintain a healthy and vibrant garden or lawn.