Causes of Calcium Deficiency in Plants, and How to Fix It ...
In addition to adding calcium to soil, gypsum will add sulfur, another necessary nutrient for plants. Lime. Lime, or calcium carbonate, usually comes in powder form, which you mix into your soil in the spring. Adding lime will slightly raise soil pH, so keep this in mind if your pH runs a little high. You can find lime online or in any garden ...