Aeration involves perforating the soil with small holes to allow air, water and nutrients to penetrate the grass roots. This helps the roots grow deeply and produce a stronger, healthier lawn.
The best time for aeration is during the growing season, when the grass can heal and fill in any open areas after soil plugs are removed. Ideally, schedule your aeration with cool season grass in the early spring or fall, and those with warm season grass in the late spring.