Winter Lawn Damage: Causes & Repair for Cold-Injured Grass

Spring reveal can be disappointing: winter damage from crown hydration, snow mold, voles, or desiccation. Most damage is repairable with the right approach.

Common Winter Injuries

• Crown hydration: Warm spell + sudden freeze → water-filled crowns expand and rupture. Unpreventable.
• Snow mold: Pink/gray crust after melt. Improve drainage, dethatch, aerate for air circulation.
• Voles: Narrow runways under snow; grass and roots eaten. Remove cover; trap/bait; invite predators.
• Winter desiccation: Frozen roots can't replace water lost to cold winds. Tan/brown leaves, possible crown death.

Repair Strategies

• Large dead areas: Resod — remove dead grass, lay new sod, water well until established.
• Spot damage: Reseed after dethatching and aerating. Skip crabgrass preventer — it blocks grass seed too. Lightly scratch soil surface to speed germination.

Water new seed consistently until established. Dilute fertilizer helps seedlings. Patience works too — many grasses self-repair over time.