Make the November application after the grass has stopped growing. Homeowners may find it easier and less expensive to manage the diseases through cultural practices rather than use the fungicides. Snow Mold Snow molds are active during cool weather and are most noticeable in the spring after the snow melts. The spots of dead grass killed by snow mold are easily confused with patches of dead bentgrass. A late season application nitrogen, leading to a late flush of growth, may predispose the lawn to attacks of snow mold.
Symptoms are patches of dead, gray to straw colored grass in the spring.
A gray or pink fungus may be seen growing at the edges of the patches. Chemical controls may not be practical for home lawns. Do not apply fertilizer late in the season unless the grass has gone dormant. Rake out the dead grass and reseed if necessary. Brown Patch Brown patch is not so common as some other diseases.