The answer to 'how often to aeration' is that most lawns should be aerated once or twice per year. Aeration is the process of puncturing small holes in the soil to allow air, water, and nutrients to better reach the grassroots. This helps to alleviate soil compaction and promote a healthier, more vibrant lawn.
The optimal time for aeration is typically in the fall for cool-season grasses or in the spring for warm-season grasses. However, the frequency may need to be adjusted based on factors like soil type, lawn usage, and thatch buildup. In general, heavily used lawns or those with dense clay soils may benefit from aeration more often, such as every 6-12 months.