Which technique can help manage soil compaction in landscaping?

Regular aeration is an effective technique for managing soil compaction in landscaping. This process involves perforating the soil with holes to allow air, water, and nutrients to penetrate below the surface. By creating these holes, aeration helps alleviate compacted soil, making it easier for roots to grow and access essential resources. Aeration also encourages the development of beneficial microbial life in the soil, which can enhance its structure and health over time.

While other options may seem beneficial in maintaining plant health, they do not address the core issue of soil compaction effectively. For instance, watering deeply is important for encouraging deep root growth, but it does not reduce compaction itself. Adding sand can sometimes be counterproductive, as it may create a mix that is denser than the surrounding soil, worsening compaction in certain conditions. Frequent fertilizer applications contribute to plant nutrition but do not impact the physical structure or density of the soil. Thus, regular aeration stands out as the most direct method to mitigate soil compaction, ensuring a healthier environment for plants.