How often do you put Epsom salt on tomatoes?

In this brief article, we are going to answer the question “how often do you put Epsom salt on tomatoes?”. We will also discuss how and when to use epsom salt on tomatoes. In the end, we will discuss whether it prevents blossom end rot or not.

How often do you put Epsom salt on tomatoes?

Epsom salt should be put once every six weeks on tomatoes. One gallon of water and 1 teaspoon of Epsom salt is the optimal ratio for every 12 inches increase in tomato plant height.

At the very least, you should give your tomato plant two tablespoons of Epsom salt every other week if it’s two feet tall. It would work out well if it is used twice. 

More ideal is to put Epsom salt on the 15th and once on the 30th. The typical norm for treating other vegetation is every six weeks.

Epsom salt is a phytochemical called magnesium sulfate. It increases the magnesium content of the soil. It also helps to turn yellow wilting leaves back to their original green color.

Magnesium sulfate is renowned for its beneficial effects on tomato cultivation, acting as a plant nutrient to combat magnesium deficiency.

How to use Epsom salt on your tomatoes?

For containerized tomatoes, make a mixture by adding two teaspoons of Epsom salt to 4 liters of water. Then spray it on your leaves or water the soil. 

When beginning to sow seeds in the garden, get one cup of Epsom salt and generously spread it over the area to be planted. 

In an ideal setting, 1 cup of Epsom salt will fill around 100 square feet. Ensure that it is distributed equally.

After you’ve finished, you should incorporate the Epsom salt into the ground. This helps tomatoes to grow, reinforce cell walls, create strong roots, and mature healthily.

When tomato plants lack magnesium, the leaves start to turn yellow.  As your tomato plants grow, try to incorporate Epsom salt into the soil to avoid the yellowing of leaves.

When should you use Epsom salt on tomatoes?

Your priority should be while building the seedbed for tomatoes.

Epsom salt is best used while sowing tomato seeds. When planting seeds on a lawn, a standard-sized cup of Epsom salt will normally cover 100 square feet. 

Keep in mind that you need to add one gallon of water for every tablespoon, and then use a mister to spread the mixture uniformly.

To successfully cultivate tomatoes in a pot, you will first need to learn how to adjust the pH of the soil. The effective and economical method is to spray them with Epsom salt. 

Plant pots, like those planted outdoors for gardening, require vitality to produce and expand to their fullest capacity. 

To enhance the intake of Epsom salt’s critical nutrients, you should spray the solution over the leaves of your tomatoes.

When plants require fast-acting nutrients to increase their production, the foliar spray is sufficient. 

For inexperienced gardeners, foliar feeding refers to the practice of spraying correct nutrients onto tomato leaves as opposed to soil amendment, as is the case with many other regularly grown houseplants.

Epsom salt greatly increases the amount of photosynthesis in plant cells. If the leaves start turning yellow, this indicates that your tomatoes are experiencing magnesium deficiency, and consequently, the production will be significantly reduced upon harvest.

What are the benefits of Epsom salt?

Plants that are sprayed with Epsom salt will have fewer flaws since they will not be susceptible to severe ailments brought on by magnesium deficiency.

In addition to boosting the growing process, Epsom salt helps eliminate snails and slugs.

Plants produce larger fruits as a result of the increased photosynthesis process. They have a greater possibility of successful seed germination and plant growth. The tomatoes will be juicier and ripen uniformly. They will be bright red.

Tomatoes’ increasing cell wall thickness will offer them compressive resistance against any mechanical or osmotic pressure.  

Tomato plants may experience root stress after being transplanted, resulting in leaf drooping and discoloration. Epsom salt is frequently used to prevent the aggravation of this illness.

Improved photosynthesis extends the tomatoes’ fruiting period. The developing color of tomatoes will be more beautiful and redder than normal. Tomatoes will be bigger.

Does Epsom salt prevent blossom end rot?

Epsom salt does not give any protection against blossom end rot; rather, it provides more magnesium. 

Magnesium deficiency can hinder plant development and fruit development. If you have poor soil, various deficits are probable. 

Various nutrients will be deficient including calcium which will cause blossom end rot. The increased amount of watering following the application of Epsom salt may also contribute to blossom end rot. However, regular watering would resolve the issue.

Thus, even though Epsom salt is beneficial to your plants, it should not be considered a treatment for blossom end rot in tomatoes (or peppers, melons, etc.).


In this brief article, we answered the question “how often do you put Epsom salt on tomatoes?”. We also discussed how and when to use epsom salt on tomatoes. In the end, we discussed whether it prevents blossom end rot or not.