How can I effectively blend new sod with existing grass in my lawn for a seamless and cohesive appearance?

To blend new sod with existing grass in your lawn, follow these steps: 1. Prepare the area by removing debris and loosening the soil. 2. Lay the new sod next to the existing grass in a staggered pattern. 3. Water the sod and existing grass regularly to promote healthy growth. 4. Gradually mow the entire lawn at the same height to create a seamless look.