Saturday, August 29, 2020

Epsom Salt in the Organic Garden

Red Apple with rain water.

Epsom Salt in the Organic Garden

The popularity of organic gardening is increasing day by day. Organic gardeners have a philosophy that supports the health of the whole system of gardening, especially when it comes to dealing with the soil. As organic gardeners look for alternatives to synthetic pesticides and fertilizers, Epsom Salt has risen in popularity as an effective organic soil amendment for garden use.

The main ingredient in Epsom Salt is magnesium sulfate which is an important soil additive for healthy plant life. It allows plants to take in nutrients like phosphorus and nitrogen and enhances the capability of the soil. It assists in the creation of chlorophyll which is used by the plant to convert sunlight into food.

Epsom Salt for Use on Hostas for Best Care

The benefits of Epsom Salt on plants are many including that it’s organic, it’s gentle on plants and it’s inexpensive! 

Here are some specific ways it helps with plants:

  • It enhances a plant’s green color, especially ornamental leafy plants like hostas.
  • Improves flower blooming.
  • It helps plants grow bushier.
  • Greatly improves a plant’s ability to produce fruit and flowers.
  • It’s safe, and there is little danger of problems from overuse.
  • It doesn’t build up in the soil and it won't have buildup that will clog the root cells of your plants. In fact, Epsom Salt can be used for potted plants that have developed a salt accumulation.

Sprayer for use on Seedlings in Plastic Pot

It's Versatile in its Use!

Another big advantage of Epsom Salt is its versatility in the way it can be used. You can sprinkle Epsom Salt over a large garden area, you can use it to circle around plants or you can add a solution of Epsom Salt to a garden sprayer

Garden Sprayer for use with Epsom Salt on Hostas

On a New Garden Area

Sprinkle up to one cup per 100 square feet and work it into the soil.


Child planting seedling in organic garden

To Help with Transplant Shock

Did you know that using Epsom Salt can reduce transplant shock? Plants can become weak and wither right after transplanting, and Epsom Salt can help reduce that transplant shock to the plant roots. The solution to use for this is one cup of Epsom Salt per 100 square feet.

On House Plants

Dissolve 2 tablespoons per gallon of water and use it to water your houseplants at least once a month.


Container Grown Peppers Cayenne

On Potted Vegetables and Fruits

Epsom Salt can be safely used with all fruits, vegetables, and herbs.

Water an area with a solution of 2 tablespoons of Epsom Salt per gallon of water and apply at least one time a month for more robust fruiting.

For a Large Vegetable Garden

Fill your tank sprayer with one tablespoon of Epsom Salt per gallon of water. Use this mixture to spray your garden after the initial planting, when the plants start growing and when the vegetables begin to mature.


Vine tomatoes, green onions and pasta noodles

Tomatoes and Peppers

Since tomatoes are prone to magnesium deficiency, Epsom Salt is a great way to keep the plants healthy later into the season when the leaves of the plant can turn yellow. You may also have noticed a decreased production as the season wanes on.

For tomatoes, it is important to use Epsom Salt at the beginning of the season and all through the season.

Add one to two tablespoons of Epsom Salt before sowing seeds or planting a transplant. As the tomato plant matures, work in one tablespoon of Epsom Salt per foot of plant height around the base of the plant. 

An alternative is to create a spray of one tablespoon of Epsom Salt to a gallon of water and spray the plant every two weeks.

Peppers, too, can benefit from using Epsom Salt the same way as tomatoes.


Beautiful Orange Pinkish Roses and Healthy Leaves

Roses and Bloomers

Apply a foliar spray of one tablespoon per gallon for each foot of shrub height in the Spring when leaves appear and then again when flowering.

Sunset Hosta  Shop Here

Other Uses

Slug Control

For those plants that are prone to slug damage, apply a narrow band of Epsom Salt around the plant. 

Since Epsom Salt is a scratchy substance, it will pierce the skin of any slimy creature when it crosses over it.

Beetles and Other Garden Pests

A solution of one cup of Epsom Salt per five gallons of water is a great deterrent to Beetles and other garden pests.


Epsom Salt is a great alternative to synthetic chemicals. It's no surprise that it is so popular in organic gardens.


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