Core aeration is the process of pulling small plugs of soil out of the ground — typically three-quarters of an inch wide and up to four inches deep — to relieve compaction and open the soil profile. Once those channels are open, water infiltrates instead of running off, fertilizer reaches the root zone instead of sitting on the surface, and roots have room to grow downward instead of spreading sideways through dense, oxygen-starved soil.
Most Suffolk County lawns deal with some degree of compaction. It builds up gradually from foot traffic, vehicle pressure, summer heat, and the natural settling of soil over time. It’s invisible from the surface, which is why so many homeowners keep fertilizing and watering without seeing the results they expect. The inputs are fine — the soil just won’t let them through.