Tomato plants require much more calcium than other fruits and vegetables. Soil that is not already rich in calcium will allow disease such as blossom end rot to infect your tomato plants. Perform a soil test to discover if your soil is deficient in calcium. Eggshells contain 95 percent calcium carbonate making them an ideal calcium additive.
Things You'll Need
- Hand trowel
Place your collected eggshells in a blender and blend until you have a dry powder.
Sprinkle the powdered eggshells into the bottom of your planting hole. Plant your tomatoes as you normally would.
Wait until your tomato plants begin to grow. Blend more eggshells into a powder.
Sprinkle the powder around the tomato plant. Use a hand trowel to mix the eggshell powder into the soil. Repeat every two weeks during the growing season.