A light application of salt hay makes an ideal mulch for just-sown grass seed. It covers large areas inexpensively, prevents seed from blowing away and doesn't sprout weeds. If you can afford it, or for smaller areas, use manure or compost instead to both protect the seed and feed the soil.
About this Author
Melissa Jordan-Reilly has been a writer for 20 years, both as a newspaper reporter and as an editor of nonprofit newsletters. Among the publications in which she has published are, "The Winsted Journal," "Taconic" and "Compass Magazine." A graduate of the University of Connecticut, Jordan-Reilly also pursues sustainable agriculture techniques and tends a market garden at her Northwestern Connecticut home.