A: In simplest terms, it is the process of making finger sized holes in your lawn and depositing the removed material on the surface to break down. This allows fertilizer, seed, water and oxygen to get to the roots where healthy grass originates.
A: For cool season grasses: spring (March-May)
and fall (August-November) are best.
A: Depending on the turf conditions, visual results may or may not be immediate from a single aeration. Subterranean root growth and overall health and stress tolerance will however begin to improve at once. Even in the toughest conditions aeration in combination with an appropriate fertilizing, irrigation and weed control program will show dramatic visual results in the second year after a second or third aeration.
A: No. Aeration needs to be an ongoing part of a lawn care plan just like fertilizing, weed and pest control, irrigation and mowing. In some cases aeration can be reduced from twice a year to once a year after a couple of seasons.
A: Depending on weather, soil conditions, watering and mowing frequency, the cores will break down and disappear in about two weeks. This process will add nutrients to the lawn. Raking up the cores reduces aeration effectiveness.
A: Over seeding prior to lawn aeration will achieve the best return on your seed investment, as it will more easily get into the lawn root structure at this time.
A: Yes. Water helps breakdown the cores left in the yard and is particularly effective on the newly exposed root system.
A: It is not neccesarily required in the Midwest. Please see the following articles regarding dethatching: