I have fielded several questions recently about snow mold and would like to shed a little light on the subject. The two “snow mold” diseases are called gray snow mold (Typhula blight) and pink snow mold (sometimes called Microdochium Patch or Fusarium Patch). Snow molds are most likely to occur when snow falls on ground that has not yet frozen, and remains for weeks or months. The lush turf under the snow is an excellent nutrient source for the fungi. Snow mold is typically not found on home lawns but more likely to found on golf courses. More information on this subject may be found on the Kansas State Research and Extension website.
Becks Recommendations:
Fungicides are not recommended for home lawns except in extreme situations. Though symptoms look dramatic, the turf will recover eventually. You may over seed the affected areas now, but care must be taken when selecting a turf pre-emergent for spring application. Use cultural practices described below.
Rake lawns to air out the turf and promote drying. This must be done prior to the application of any turf pre-emergent chemicals.
Eliminate poor drainage areas in your lawn by incorporating changes to the grade, installing downspout drains to re-direct roof water or a French Drain system to remove water from low spots.
Core-aerating can also be helpful in promoting better drainage and relieving compaction.
