If you don’t know what lime soil amendments are, you may be missing out on an essential way to have a healthy lawn…maybe. It all depends on the pH of your soil. Lime comes from limestone and is ground up into a powder that can be added to your soil. Lime contains calcium carbonate (the same stuff in antacids) and magnesium carbonate, and it will increase the pH of your soil, so it is less acidic. It is not a fertilizer but instead changes the growing conditions of your lawn so your lawn can use nutrients available in a better fashion.