When should I reseed my lawn? Timing is everything when it comes to lawn care. Generally speaking, late summer to early fall is the time period where you’ll want to think the most about planting new grass seeds in your yard. Every type of lawn is different. And, the timing will also depend on your region and weather conditions you’ve had in your area over the previous months. Want to get started preparing for an enviable lawn? Get a Lawn Doctor Pro started on your lawn today... | Lawn Doctor