Epsom Salt Uses In Plants: Benefits, Application + 9 Methods

Epsom salt is not a novel idea in gardening. Let’s learn about Epsom Salt Uses In Plants (Indoor/outdoors) and overall gardening. It has been said that this “best kept secret” works, but how exactly does it work?

Magnesium-rich Epsom salt can aid vegetable garden plants in producing bigger, more tasty fruits and vegetables.

You’ve probably heard of individuals using Epsom salts on their plants if you cultivate tomatoes or roses. Even though Epsom salts are already utilized in agricultural practices for decades and decades, some people reference it as the best-kept gardening secret. However, how may Epsom salt help your vegetation if used inside a garden?

Let’s also explore the longstanding question of why Epsom salts are used on plants, which is something that many of us have thought about for some time. Click below to BUY Now.

Epsoak Epsom Salt 19 lb. Bulk Bag Magnesium Sulfate USP

What Are Epsom Salts?

A natural mineral called Epsom salt is produced by hydrating magnesium sulfate.

It was found in a subterranean spring in the English town of Epsom in the early 1600s.

Since then, it has been utilized to treat a variety of ailments in both people and animals as well as in plants. It contains 13% sulfur and 10% magnesium chemically.

Because of the functions, they play in plant growth and development, many plants depend on these nutrients to survive.

People frequently wash their feet or bodies in Epsom salts to cure muscular aches or reduce swelling, however, these and many other alleged advantages of Epsom salts have not been clearly demonstrated by science.

Regarding gardens (outdoors) as well as house plants, Epsom salt can be used as a plant nutrient in gardening like nitrogen, and calcium. It can also make up for a soil’s lack of magnesium.

Is Epsom Salt Good for Plants?

The use of Epsom salts with plants seems to have a number of perfectly valid, significant grounds.

  • Epsom salt increases a plant’s green hue and helps flowers bloom more effectively.
  • It may even encourage bushier plant growth.
  • Magnesium sulfate in hydrated form, which is included in Epsom salt, is necessary for healthy plant growth.
  • Bugs such as slugs and voles are discouraged with Epsom salt.
  • As an addition to your regular plant food, it also provides crucial nutrients.

Why Put Epsom Salts on Plants?

Give it a chance irrespective if you don’t believe it will be impactful.

  • Nitrogen and phosphorus, two important minerals, can be more effectively absorbed by plants when magnesium is present.
  • Additionally, with its aid, chlorophyll, which is imperative for photosynthesis, is generated.
  • Additionally, magnesium considerably increases a plant’s ability to generate fruit plus blossoms.
  • Epsom salt could be used on practically all of your yard plants without harm since, unlike most chemical fertilizers, it doesn’t pose a danger of misuse and could be put to the ground to restore lost magnesium.
  • Due to the buildup of natural salt, which can collect in the soil and block the root cells of the plant, it is especially beneficial to add Epsom salt solution to houseplants that have been potted for a long time.
  • The plant’s health and vitality can be enhanced by clearing out this buildup of natural salts in the pot with Ultra Epsom Salt.
  • It is also beneficial for a newly potted plant since it will more readily get the right nutrients and have a healthy start in life.
  • Keep houseplants in bright settings unless otherwise indicated because most plants require enough sunlight to benefit from Ultra Epsom Salt (and photosynthesize).
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How to Water Plants with Epsom Salts

Epsom Salt Uses In Plants

Are you looking to figure out how to irrigate plants using Epsom salts? It’s easy.

  • Easily substitute it for usual irrigation once and perhaps even twice each month.
  • Consider using the plan that functions effectively for you; keep in mind that there are various options.
  • However, it’s a good idea to get your soil tested to see whether it’s magnesium deficient before using Epsom salt.
  • Several plants, such as beans and green vegetables, may thrive and produce on soils with low magnesium levels, so you should be mindful of that as well.
  • However, because they need a lot of magnesium, plants like peppers, tomatoes, and roses are typically irrigated with Epsom salt.
  • Whenever combined with water, Epsom salt becomes easily taken up by plants, particularly when applied like a foliar spray.
  • Apply a 2 teaspoonful (30 mL) Epsom salt treatment with one quart of water on the majority of trees and shrubs once every month.
  • For more frequent watering, lower the dosage to 1 tsp once every two weeks (15 mL).
  • Use one teaspoonful for each quart of water per each foot of plant height for foliar spraying roses. Apply again after blooming and once more in the spring when the leaves emerge.
  • When transplanting tomatoes and peppers, sprinkle one tablespoon of Epsom salt granules around each plant or spray one tablespoon of Epsom salt solution (30 mL per gallon) around each plant.

What can Epsom Salt do for Plants?

Epsom salt, if appropriately added to the soil, may promote the growth of your garden plants by raising the concentration of magnesium, one of the essential minerals in garden soil.

The following are some benefits of utilizing Epsom salts in your garden or yard:

1. Encouraged growth

  • Epsom salt, if appropriately added to the soil, may promote the growth of your garden plants by raising the concentration of magnesium, one of the essential minerals in garden soil.

2. Root shock prevention

  • The roots of seedlings or mature plants may become stressed during transplantation, which will limit their growth.
  • Root stress often referred to as transplant shock, can cause your plants to wilt or develop yellowing leaves, among other symptoms.
  • Epsom salt works to prevent root stress by increasing chlorophyll production and assisting the roots in ingesting further nutrients.

3. Improved flavor

  • Fruits and vegetables get sweeter and tastier as a plant generates more sugar as a result of increased chlorophyll production.

4. Pest control

  • Apply a solution made of one cup of Epsom salt and five gallons of water on foliage to ward off insects like beetles.
  • Spread the dried salt around the plant’s base to deter slugs.
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Plants That Benefit From Epsom Salt

Epsom salt commonly referred to as magnesium sulfate, is advantageous to plants that require more sulfur or magnesium than others, such as:

Pepper plants

  • Peppers require more magnesium, particularly if they are grown in containers.
  • Magnesium and sulfur together promote pepper growth.


  • Epsom salt’s magnesium content is advantageous to rose plants.
  • Spray the soil with an Epsom salt solution to promote lush green foliage and bigger blossoms.
  • Spraying the leaves should be avoided since too much salt contact with the leaves might result in sunburn.

Tomato plants

  • While a small amount of Epsom salt can help vegetables and improve their flavor, too much can cause blossom end rot.
  • This is because tomato plants require calcium, and if the soil contains too much salt, the roots will be forced to take up magnesium rather than calcium.

How To Apply Epsom Salt To Plants

  • Epsom salts are most typically used in gardens to make foliar spray.
  • Epsom salt and water are simply diluted to the necessary amount, then sprayed onto plant leaves.
  • Do this again, first after blooming and again in the early spring when the new leaves are beginning to emerge.
  • In order to irrigate the plant at the soil level, Epsom salts can also be mixed with water and applied as a soil drench.
  • Epsom salts can be applied straight to the soil before planting, or you can work them into the soil without first diluting them with water.

Epsom Salt Foliar Spray Recipe

Spray your plants with Epsom salt for greener leaves! As a foliar spray, Epsom salts are a useful supplement to plants.

  • These salts, which are composed of sulfur and magnesium, may help your foliage sparkle.
  • Use a spray container containing 1 spoonful of Epsom salt per one quart of water. Shake well.
  • Twice a month, sprinkle the foliage of your prized plants with the Epsom salt spray.
  • This Epsom salt foliar spray formula was developed because the magnesium in Epsom salts helps support the chlorophyll in plant leaves.
  • Your plant could be able to absorb more magnesium if you use Epsom salts as a foliar spray. Epsom salts also aid in plants’ ability to absorb minerals.

Guidelines for Using Epsom Salt inside the Garden

The use of Epsom salt solution would help the crops in your yard. To properly incorporate it into your soil, follow these steps:

  • Test the soil, it’s important. If your plant’s growing medium is deficient in magnesium, an analysis of the soil will show this. Epsom salt may be utilized in that case.
  • Consult an expert to evaluate whether you need a complete fertilizer if your garden soil has other problems or has a different nutrient shortage (one that contains nitrogen, phosphorus, and potassium).
  • Salt and water should be combined. Epsom salts should be diluted with water.
  • In the event that you wish to irrigate the soil, use two teaspoons of Epsom salt per gallon of water. Alternatively, if you intend to add the liquid to a sprayer, use one tablespoon of Epsom salt per gallon.
  • Directly irrigate your plants or soil. Use your Epsom salt solution to wet the soil around the base of the plant, or use it as an ingredient in a foliar spray to allow plants to take up nutrients through their leaves rather than their roots.

When Not to Use Epsom Salts in the Garden

Some plants have been reported to benefit from Epsom salts under specific circumstances.

The main flowers and crops that can enjoy the magnesium concentration in Epsom salts include roses, tomatoes, and peppers.

Epsom salts shouldn’t be utilized in a few specific circumstances, though. These are listed below.

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1. Acidic Soil

  • In order to balance out acidic soil, Epsom salts might be helpful. The converse is true for alkaline soil.
  • Epsom salts should not be used in gardens with acidic soil since doing so might make the issue worse.

2. Magnesium Deficient Plants

  • It’s not necessary for a plant to have a magnesium shortage to thrive on soil that lacks magnesium.
  • A plant’s ability to properly ingest the magnesium inside the soil is inhibited by the soil’s excessive phosphorus density, which causes certain vegetation to have magnesium shortages.
  • In this case, introducing Epsom salts won’t help since the soil’s phosphorus levels have to be reduced in order for plants to be capable of taking in magnesium.

3. As a Main Fertilizer

  • Numerous plants benefit from the components ingrained in Epsom salts.
  • However, nitrogen, phosphorus, and potassium—abbreviated N-P-K in the gardening community—are the three primary nutrients that plants need.
  • The nutrient composition of Epsom salts is zero, which explains they contain zero nitrogen, phosphorus, as well as potassium.
  • It’s critical to understand that Epsom salts cannot replace fertilizer if you decide to use them on your plants.

How Much Epsom Salt For Plants

There are several methods to apply Epsom salts inside the garden, as well as the appropriate proportion will change depending on the method of administration and the species you’re trying to treat.

  • As a simple Epsom salt additive, which can be applied to houseplants as well as gardens, utilize 2 tbsp of Epsom salt for every quart of water to hydrate your crops once each month in between routine waterings.
  • Epsom salts should be applied over your plant’s base to help encourage the development and blooming of roses.
  • When growing roses, it is suggested that one spoonful of Epsom salts be added to the ground before the shrub is lowered into it.

What Plants don’t Like Epsom Salt?

Epsom salts can really be harmful to your soil and plants if the soil already contains enough magnesium. For example, they can prevent calcium uptake.

Will Epsom Salt kill Plants?

Definitely. When you utilize excessive Epsom salt, you risk throwing your soil out of equilibrium.

Epsom Salt Uses In Plants FAQS

Q: For Plants, What Amount Of Epsom Salt Must Be Used For Each Gallon Of Water?

For every gallon of water, dissolve two teaspoons of Epsom salt.

Q: How Much Epsom Salt Per Liter For Plants?

Mix 2-3 liters of water with 1-2 teaspoons of Epsom salt.

Q: Could Plants Be Treated With Lavender Epsom Salt?

The use of lavender Epsom salts on crops does seem to have some good, significant grounds.

Q: Is Epsom Salt The Same As Epsom Salt For Plants?

Certainly. Both are the same thing and their uses.


For some plants, particularly roses, tomatoes, and peppers, Epsom salts are a helpful supplement because they contain micronutrients.

In some circumstances, such as in acidic soil, they can help to enhance soil quality, whilst in others, they might be deleterious.

Since Epsom salts lack essential nutrients, a balanced fertilizer should always be the first option.

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