The orange residue on your shoes is from a fungal disease called rust. It is a common problem on newly seeded and drought stressed lawns. As new lawns mature or drought conditions subside the rust symptoms also tend to disappear. Fungicide treatments are usually not needed. Just be patient and reseed any dead areas in spring or fall.
Photo Courtesy Missouri Botanical Garden Plant Finder
www.mobot.org/gardeninghelp/plantfinder






