Epsom Salt for Plants: Complete Guide 

 May 1, 2022

By  admin

Epsom Salt is a common household item that you might not know has many uses besides cooking. From killing insects to making your plants extra perky, Epsom salt can do it all!

Epsom salt is a popular home remedy for plants. It can be used to help with a variety of problems, including over-watering and nutrient deficiencies. This article will teach you what plants don’t like epsom salt and how to avoid it.

There are affiliate links in this post. We may get a commission if you click and purchase, at no extra cost to you. For additional information, please visit our disclosure policy.

Here’s all you need to know about using Epsom salt in your garden.


Epsom salt is beneficial to plants.

You may have heard of Epsom salt being used in the garden. But does it benefit or harm plants?

In this article, we’ll cover how Epsom salt works. We’ll look at whether it can be useful. We’ll also talk about how to use Epsom salt is beneficial to plants. – and when it could do more harm in your garden than good. This is your complete guide to Epsom salt is beneficial to plants..

First and foremost, what exactly is Epsom salt?

What is Epsom salt, exactly?

Magnesium sulfate, or Epsom salt, is a mixture of magnesium, sulfur, and oxygen.

The name is derived from the English town of Epsom in Surrey, where magnesium sulphate was originally found in the waters of a natural spring in the 17th century. Lake beds, groundwater, ocean, and limestone caverns all contain the mineral.

What are the benefits of Epsom salt for plants?

Magnesium is abundant in Epsom salt. Plants benefit from micronutrients such as magnesium and iron. They promote the uptake of important nutrients including nitrogen and phosphorus.

Epsom salt may help plants grow greener leaves by assisting in the production of chlorophyll, which is required for plants to get energy from the sun.

Magnesium is also necessary for the formation of healthy flowers and fruits. As a result, it’s a handy mineral to keep on hand.

However, if your soil is rich in organic matter, you should have ample magnesium. It is only used in trace quantities by plants.

When soil becomes depleted and mineral-deficient, it is necessary to supplement with magnesium. If you’re a commercial grower rather than a home gardener, this is frequently the case.

Which plants benefit from Epsom salt?


Epsom salt is often used to grow roses, tomatoes, and peppers. It’s also good for producing potatoes, carrots, and lemons, according to some gardeners. Magnesium is very important to all of these plants.

Is there a nutritional deficiency in your plants?


Understanding your garden soil can assist you in determining what is required. Nutrient deficits and imbalances may be discovered by a soil test.

Epsom salt may help your plants if they are magnesium deficient. However, it’s always a good idea to figure out what the soil is missing before you attempt anything new.

Because the soil contains too much phosphorus, certain plants suffer from magnesium insufficiency. In this situation, adding Epsom salt will not assist since the phosphorus level would still be too high. So, to find out what’s lacking, get your soil examined.

It’s critical to recognize that Epsom salts are not nutrition. Nitrogen, phosphorous, and potassium are the most important nutrients for your plants. 

Epsom salt may aid in the absorption of these nutrients by your plants, but it is not a general fertilizer and will be ineffective if applied in this manner.

How can a magnesium deficit manifest itself?


If the leaves of your tomatoes turn yellow but the veins remain green, the soil may be deficient in magnesium.

Epsom salt is beneficial to plants.: How to use

Epsom salt is applied to the leaves in two ways: as a watered-in solution or as a spray. Epsom salt should be diluted with water in both circumstances. To 1 gallon of water, add 1 tablespoon of salt.

What plants aren’t fond of Epsom salt?

Epsom salt may be beneficial in certain instances, although plants can thrive without it. Beans, for example, may thrive even in low magnesium environments.

Here’s something fascinating. There’s a lot of chatter about how Epsom salt may help prevent blossom-end rot in tomatoes, but it might really make the issue worse. This is because a shortage of calcium causes blossom-end rot.


When you add magnesium to the soil, the tomato plant will strive to absorb both elements even though it only requires calcium. In other words, magnesium and calcium are in competition.

As previously said, a soil test is recommended to determine precisely what nutrients are present in your soil so that you can make an educated decision about what to do next.

Epsom salt is used to care for ferns and other indoor plants.

Epsom salt solution might help house plants with yellowing leaves if they are magnesium deficient. To dilute, use the following proportions: 1 gallon of water + 1 tablespoon of salt

Spraying your home plants is the most convenient approach to treat them. To green up your plants again, spraying the leaves with the salt solution is supposed to work quicker than watering the soil.


Always remember that there are a variety of reasons why a plant’s leaves may yellow. Before you go for a supplement, be sure you’ve covered the essentials.

Check that your plants are receiving enough water, heat, and light, and that the soil or growth medium is rich in the proper nutrients.

Nutrient deficiency prevention methods

You shouldn’t need to use supplements if you make sure your garden and container soils are nutrient-rich at the start of each season.

Start each season by fertilizing your soil with a general-purpose feed that is high in nitrogen, phosphate, and potassium.

These are the three nutrients that plants need to survive. When you combine this with a nice mulch of compost to get things started, you should have wonderful results.

Epsom salt is beneficial to plants.: 3 tips to take away

  1. Epsom salt may help you grow magnesium-loving plants like tomatoes, peppers, potatoes, and carrots in weary soil that is poor in magnesium. The salt aids in the absorption of nutrients and makes leaves greener, allowing plants to receive more energy from the sun.
  2. Epsom salt is not a fertilizer and should not be used to treat yellow or wilting plants as a blanket treatment. A simple soil test might reveal what minerals your soil is lacking. Then you may correct the imbalance by supplementing with the appropriate nutrients.
  3. To combat yellowing caused by a magnesium deficiency, apply an Epsom salt spray on indoor plants like ferns. But keep in mind that Epsom salt isn’t a fertilizer. Repotting home plants and using new compost will replenish crucial nutrients.

Do you want to learn how to cultivate plants? Check out the following:

There are 21 different types of evergreen trees.

Winter Garden Plants: 30 of the Best

Winter Greenhouse Gardening: A Complete Guide

Description in the meta:

The “how much epsom salt per gallon of water hydroponics” is a question that comes up often. The answer to this question is that it depends on the size and type of plants you are growing.

Related Tags

  • how much epsom salt for plants
  • how much epsom salt per gallon of water for plants
  • how much epsom salt per gallon of water for tomatoes
  • how to apply epsom salt to plants
  • how much epsom salt per litre for plants

Emil Schoene

Born and raised in Austin, TX I come from a background of home renovation. By helping my family in my younger years with their construction business, I learned the ropes quickly and as I grew it became my passion that I still do today. Looking to share my knowledge with others. I invite you to leave comments on any post as I know you will have questions that you are not finding anywhere else.

{"email":"Email address invalid","url":"Website address invalid","required":"Required field missing"}