An aerator is a machine that has tines that pull plugs of soil from the earth. It relieves soil compaction which can be a big problem in East Tennessee and allows nutrients to reach the roots of the turf. Additionally, it provides a great seedbed to grow new turf due to summer heat stress/loss and areas that weeds have invaded and killed off. It is recommended to aerate and overseed every fall. It is strongly recommended to at least lay new seed every fall at a minimum as it’s your best chance to get new turf to grow as each year, existing turf will die in some areas due to our climate.