Aerate in 3 directions, run a power rake over the area until you make a seed bed.<br>Spread ryegrass, rake, roll, and apply penn mulch.<p>You have to apply fungicide in the fall to<br>prevent snow molds in the spring.<p>There is nothing that "cures" a snow mold<br>once the pathogen has started.
Kevin, you cannot deal with apparent fungus problems by conjecture. Have you had the problem positively identified? If you have had a sample tested by knowledgeable office or person, and know for sure that you are dealing with gray snow mold, then see <a href="http://ianrwww.unl.edu/pubs/PlantDisease/g824.htm#tbgsm]">Snow Mold</a>, or numerous other extension service sites.<p>In my experience, shorter mowing late in season is the best cultural practice. In 20 yrs, only had one major case of gray snow mold, and that was in a mostly bentgrass lawn.<p>----------<br>Jim<br>North central Indiana<p>