One of the most beneficial treatments you can provide for your lawn is aeration. Core aeration is the process of removing small plugs of soil from the lawn, which reduces the compaction of your soil and promotes root growth. This is the preferred method among landscape professionals like Hively; the alternative, spike aeration, simply pokes holes, which is much less effective and can actually cause further soil compaction.
In the fall, when your turf switches gears from top growth to root growth, aeration provides water and nutrients better access to these roots, which helps it grow thicker and healthier. If you overseed this time of year, aeration also helps maximize soil-to-seed contact, which means you’ll be seeing more of your freshly planted seed sprouting.