this invention is directed to a particulate deicing composition comprising a particulate deicer salt such as sodium chloride ; and a particulate plant material having a particle size of from about 2000μ or less and a moisture content of from about 12 percent or less . the particulate deicer salt and the particulate plant material are in relative amounts so that the particulate plant material is effective for inhibiting the corrosivity of the deicer salt on ferrous metal .