Pink Snow Mold
This disease occurs when temperatures are in the 40 to 50 F range. Pink fungus spores accumulate on the leaves of infected grass plants under snow cover. Individual grass blades may seem nearly red or sickly pink. Another diagnostic feature is the absence of the pinhead brown sclerotia, common with Gray Snow Mold. It usually attacks only the leaves. However, under conditions ideal for disease development, the fungus can kill the crowns and roots as well.
Pink Snow Mold is a much more severe disease than Gray Snow Mold, especially when cold wet weather in the fall results in the development of the disease prior to snow cover. The fungus will continue its activity from winter into spring. Under these conditions, damage to the turf is likely to be severe and long-lasting. Snow mold damaged areas are prone to later growing season disease issues, threatening your lawn's health later in the season.