Gypsum is another excellent source of calcium, especially if you need to add calcium without affecting soil pH. It's made from calcium sulfate and can improve soil structure by helping to break up ...

“With gypsum, the soil structure becomes more sponge-like ... and how much the power plants have available,” he explains, adding that the construction industry also uses the product to make ...

Another natural option is dolomite, a mineral that adds calcium and magnesium to soil. Gypsum also offers calcium and sulfur, which help plants grow. Adding gypsum to soil improves its structure ...