Answer: Are you sure it is the grass that is white? Sometimes, when the snow melts, there will be a white fungus (such as snow mold) on the dead grass blades. If the white patches look hairy or fuzzy, this may be the case. If it is, you need to use a leaf rake to "fluff up" the grass. Don't leave any matted areas. This allows air to circulate, and helps control the fungus.
Proper lawn management will reduce the danger of snow molds. Management practices include keeping the lawn mowed in the fall so that there is no thick mat of grass for the snow molds to develop on. Lawn areas where snow molds occur should not be heavily fertilized in late summer or early fall. A late fall application of fertilizer (after October 15) will not promote lush growth and snow mold but will help the stems and roots of the grass so be sure to make a late fall application of ferilizer. Snow molds do not occur often enough on lawns to merit a fall application of fungicide as a preventive measure unless there is a history of snow mold. When snow mold is observed in the spring it is usually too late to apply fungicide.
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