Should I Add Sulfur To My Lawn
Lower Your Lawn's Soil pH With Sulfur LawnEQ Blog. 1 hours ago This would include ammonium sulfate. If after testing you discover that your lawn's pH level is too high, then you will have to add sulfur. (Courtesy: Prateek Rungta at flickr.com) Fertilizers containing ammonium sulfate is often used as a method to lower pH levels in lawn soil. This is a common nitrogen fertilizer.