The answer to 'when is the best time to aerate your lawn' is that the best time to aerate your lawn is typically in the fall, between September and November. This is the ideal time because the grass is actively growing, and the soil is still warm enough for the aeration plugs to break down quickly.
Aerating your lawn helps to alleviate soil compaction, which can prevent water, air, and nutrients from reaching the roots of your grass. By creating small holes in the soil, aeration allows these essential elements to penetrate the ground more effectively, promoting healthier, thicker grass growth.