To encourage a healthy lawn, aeration and overseeding should be a part of your lawn care plan. Aerating your lawn allows air to circulate through the soil. This can be achieved through core aeration or spike aeration. Overseeding is often paired with aeration to promote thick grass cover of your lawn. Professional landscapers typically aerate a lawn one to two times per year. This number varies depending on the type and condition of the soil. Aerating your soil will leave the soil less compact, “softer” and allow your lawn to grow lush, thick and healthy.