The right amount of calcium in the soil can help plants grow healthy and strong. Test your soil first to determine how much calcium you need to add, as well as the pH level. Gypsum, lime, and bonemeal ...

Eggshells are a popular folk method for growing healthy, vigorous garden plants like tomatoes. But is there any proof to back up those benefits? Here's a look at whether eggshells are good for plants, ...