Most residential properties have river rock that is 3/4 inch to 1 1/2 inches. River rock is smooth, polished, medium-sized and adds a decorative aspect to garden beds. Pea gravel is the smallest option coming in at only 3/8 inches. Given the tiny size, pea gravel is a great choice for a playground or pathway. Crushed granite is a good selection if you have hilly terrain since it drains very well and will prevent puddling. Check out our recent blog to learn more about Landscaping Rocks to Use Around Homes: Type, Size and Color.