If your plants are showing signs of calcium deficiency, a soil additive can supply the missing nutrient. However, sometimes low levels of calcium in the soil aren’t to blame for plants’ deficiency symptoms. Your soil could contain plenty of calcium, but it isn’t available to the plants. A soil test can indicate whether your soil would benefit from additional calcium and which additive is best. Dig the additive into the soil before planting your plants.
How to Add Calcium to Garden Soil
Limestone or gypsum supply your garden soil with calcium. If your soil is acidic, adding limestone helps boost most vegetable crops by increasing alkalinity. For example, if your soil pH is below 5.5, add 2 to 3 pounds of dolomitic lime per 100 square feet to raise the pH. Apply to your local cooperative extension office for a soil test to determine its pH. Add the lime two