The STH1590 Spike Tooth Harrow cuts through clods, manure, and grasses to break up material into finer pieces so that it can be spread evenly across the ground. This harrow does an excellent job of smoothing garden plots, fields, arenas, and landscaping areas. It loosens crusted soil, aerates legume crops such as alfalfa and uncovers overwintering insects. The harrow can be used to spread manure, grass clippings, leaf litter, previous crop stubble, and gravel on driveways; It can also be incorporated into soil fertilizer, herbicide, broadcast seed, and overseeding applications.