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How to Feed Calcium to a Tomato Plant

By Alicia Bodine
Tomato plants require extra calcium.
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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.

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.


Things You Will Need

  • Eggshells
  • Blender
  • Hand trowel


  • Save the water you use to boil your eggs with. Water your tomato plants with it.


  • If your soil test comes back with a normal calcium reading, there is no need to feed your tomato plant calcium, although it won't hurt the plant.

About the Author


Alicia Bodine has been a professional writer for 13 years. She has produced thousands of articles for online publications such as Demand Studios, GoBankingRates and WiseGeek. Bodine is passionate about gardening, travel, education and finance. She has received awards for being a top content producer.