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, ...

hands tending to tomato plant with tomatoes growing - Kateryna Dziavoruk/Getty Images Tomato plants can be a little dramatic, and they are strict about their requirements: water, sun, and calcium. If ...