Traditional Plus Summer II: Enhanced calcitic lime isapplied to your lawn. The limestone will help to neutralize the natural acidity of the soil and will provide a source of calcium, which is an important nutrient for healthy root and plant growth. Calcium also functions as a conditioner to help reduce soil compaction. You may notice a slight whitish cast to your lawn for several days following this application. This is normal and is simply the deposit of the beneficial mineral nutrients that will disappear after the first rain.