Make a Calcium Spray for Tomatoes and Vegetable Plants

Suyash is a Master Gardener and the Editorial and Strategy Director at With a focus on houseplant care, he combines over a decade of hands-on horticultural experience with editorial expertise to guide and educate plant enthusiasts.
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Calcium Spray for Tomatoes and Vegetable Plants can be a boon to save them from pests and other issues. Let’s learn!Calcium Spray for Tomatoes and Vegetable Plants

Calcium is important for the growth of plants, especially veggies, and using it can save them from potential threats, too. If you want the best quality harvest and thriving plants, a spray of it, once a month, is all you need!

Why You Need a Calcium Spray?

Calcium Spray for Tomatoes and Vegetable Plants 2

Rot is a common issue with vegetables, and blossom end rot is notorious for making tomatoes suffer, which impacts the quality and quantity of the fruits.

Lack of calcium in veggies, particularly in tomatoes can weaken the cellular structure of the plant. Regular application leads to healthier cell walls, which ultimately helps the plant to fight against blossom end rot and splitting, two of the common issues in tomatoes.

The only way to combat this issue, is to ensure your veggies get the right amount of moisture and calcium—the reason why using a calcium spray can be a life saver for these plants!

How to Make a Calcium Spray for Tomatoes and Vegetable Plants?

Tomatoes and Vegetable Plants

Well, the good news is, making this spray is like taking a walk in a tomato park! 

Get a packet of powdered calcium nitrate from a garden centre. Before you proceed, it would be a good idea to wear gloves and safety goggles, as it may cause skin irritation to some people.

Now, mix 4 tablespoons (around 50- 60 grams) in one gallon of water. Stir the solution well, pour it into a spray bottle, and drench the leaves properly. Make sure the undersides of the foliage gets wet with the solution, as the absorption there is more effective. Do it in the early morning or evening, so that the leaves are not exposed to direct sunlight as it can cause burns.

Apply it once in 2-3 weeks and see the results. You can also do this—one foliar application in 2 weeks, and one application on the roots while watering, in every 2 weeks. It would make it twice a month.

Eggshell tea is also a good option as the shell are a rich source of calcium and contain 2.2 grams of calcium in the form of calcium carbonate. Boil 20-24 crushed eggshells in a gallon of water and let them sit for 24 hours. Then use this solution to water the plant, once in 2-3 weeks.

Important: Make sure the growing medium is on the little moist side all the time. Do not let the growing medium go dry ever. 

Rest assured, your tomato plants and vegetables will thrive with best quality fruits post this! 

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