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 ...

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 ...

and even gypsum or lime if a soil test indicates need for calcium. This may be added in planting holes for specific plants, adding more over time. This will improve the structure of the soil and ...