Starting a new lawn? Our turf builder is the perfect topsoil for seed or sod. Circle M has a variety of soils but the Turf Builder and Sandy Loam are your best choice for lawns. Using garden soil is not recommended as it often includes bark which will increase your chances of fairy ring mushrooms. To amend your soil we recommend our a blend of sandy loam and compost raked into an area that has been recently aerated.