Yard Answers › overseeding
When should I overseed my lawn?
Quick answer
For cool-season lawns (most of the Northeast and Midwest), overseed from late August to late September, when soil is warm and air is cooling. Keep the seed consistently moist for 2–3 weeks until it fills in.
Step by step
- 1Mow short and rake
- 2Aerate for better seed contact
- 3Spread seed and starter fertilizer
- 4Water lightly 1–2× daily
Gear that helps
Home Soil Test KitChecks pH and key nutrients so you only add what your lawn needs.$15–$30 · View on Amazon 
Manual Core AeratorOpens up compacted clay soil so water and roots get deeper.$30–$50 · View on Amazon As an Amazon Associate, My Yard earns from qualifying purchases.
Common questions
Can I overseed in spring?
Yes, but summer heat and crabgrass make it harder; fall is better.
Rather hire a local pro?
Find trusted overseeding pros near you — call or text them directly.