What Is Core Plug Aeration? Practically speaking, aeration is the process of mechanically removing small plugs of thatch and soil from the lawn to improve natural soil aeration. It’s commonly called “core aeration” in the lawn service industry, and you may have heard of it as soil cultivation (coring, spiking and slicing).
Aeration is beneficial and should be performed annually. Heavily used lawns, or those growing on heavy clay or subsoils may need more than one aeration each year. Again, turf responds best when tine spacing is closer and penetration is deeper. Core aeration can help make your lawn healthier and reduce its maintenance requirements through the following means:

-Reduced soil compaction.

-Improved air exchange between the soil and atmosphere.

-Improved fertilizer uptake and use.

-Reduced water runoff and puddling.

-Stronger turfgrass roots.

-Enhanced heat and drought stress tolerance.

-Enhanced thatch breakdown.
Whether you core aerate yourself or hire the service out, aeration equipment affects the outcome so make sure the equipment is a good quality piece. Perform fall aeration between the months of August and November and aerate before or at the time of late season fertilization. This will enhance root growth and improves spring green-up.