The best time to overseed a tired or worn out lawn in the Fall. This is due to the cooler weather and the return of the rains to provide moisture. The next best time to overseed is during the Spring.
You can overseed at other times, but have to be more diligent about watering and care of your newly seeded lawn.
Art's Nursery carries several brands of overseeding grass products that are ideal for the Pacific Northwest.
If you have more questions about overseeding, please feel free to call us at 604.882.1201 or visit Arts Nursery in person.