Soil Mender Turf Soil Builder is a rich blend of nutritional, aged humus mixed with essential supplements to form a complete soil for turf applications. It is the perfect mix for planting new grass from seed or sod, repairing damaged and bare spots, or adding organic matter to tired and stressed lawns. Soil Mender adds essential nutrients and biological material to turf soil to ensure results every time you use it. It also buffers turf against salt concentrations, improves germination, and inhibits leaching.