Help prevent this damage next winter by continuing to mow lawns until the grass is completely dormant. Mow at a final height of about two inches. Also clean up any excessive unnecessary vegetative cover near the lawn. This past winter was also good for snow mold, a fungus disease affecting lawns and other turf areas. These areas may appear moldy.
Infection stops as lawns dry out and weather warms.
Reseeding may be needed on lawns with severe damage. Rake out debris prior to seeding. Be sure the seedbed gets frequent moisture to insure success. The questions begin when trying to assess the very cold weather that arrived in early March. Early blooming shrubs, for example, may have had swelling flower buds damaged by the cold.