How do I fix bare patches in my lawn after a harsh New Brunswick winter?

To fix bare patches after a New Brunswick winter, wait until soil temperatures reach 10°C (usually late May), then rake out dead material, loosen the top inch of soil, apply seed and a thin layer of compost, and keep the area consistently moist for 2-3 weeks. Winter damage is extremely common across the province, caused by ice encasement, snow mould, salt damage near driveways, and vole tunnels hidden under snowpack.

Start by diagnosing what caused the bare patches, since this determines your repair strategy. Snow mould appears as circular matted patches with white or pinkish fungal threads — common in Fredericton and inland areas that see heavy snowfall (250-300cm annually). Gently rake these areas to break up the matted grass and improve air circulation; many will recover on their own once temperatures warm up. Salt damage along driveways and walkways creates brown, dead strips that won't recover — these need full reseeding. Vole damage shows as winding trails of dead grass at ground level, typically in areas where deep snow sat all winter.

For patches that need reseeding, the repair process is straightforward. Rake away all dead material down to bare soil. Use a garden fork or hand cultivator to loosen the top 1-2 inches of soil — this is critical for seed-to-soil contact. If your soil is the heavy clay typical of the Saint John River valley, mix in a handful of compost or peat moss per square foot to improve the seedbed. Apply grass seed at about 8-10 seeds per square inch (roughly 50% heavier than normal seeding rates for quicker coverage).

Use a seed blend suited to New Brunswick's climate: 60% Kentucky Bluegrass, 20% Fine Fescue, and 20% Perennial Ryegrass. The Ryegrass will germinate in 5-7 days and provide quick green cover while the slower Bluegrass (14-21 days to germinate) fills in for long-term density. Cover the seeded area with 3-5mm of finely screened compost or peat moss — just enough to hold moisture but not so thick it smothers emerging seedlings.

Keep repaired patches moist with light watering once or twice daily until grass is 2 inches tall, then transition to deeper, less frequent watering. Avoid walking on repaired areas for at least 4-6 weeks. Because New Brunswick soils are typically acidic (pH 4.5-6.0), consider broadcasting pelletized lime over your repair areas at 5-10 pounds per 100 square feet to create better growing conditions.

For large-scale winter damage covering more than 30-40% of your lawn, overseeding the entire property is more practical and cost-effective than patching individual spots. Professional overseeding in New Brunswick costs $100-200 per 1,000 square feet and gives you a more uniform result.

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