Dre Campbell Farm
Epsom Salt for Plants: Ease Your Gardening Woes

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11 Practical Ways to Use Epsom Salt for Plants

Good for tomato and pepper plants, Epsom salt plays a powerful role in the garden. Additionally, it works great for lawn care and roses, jasmine, hydrangeas, and ferns also like it.

Read on to learn how to use Epsom salt for your plants and your vegetable garden.

1. Improve Seed Germination

Dissolve one tablespoon of Epsom salt in a gallon of water and apply as a drench to the soil before you begin planting seeds. This will help get your garden off to a strong start.

The magnesium will help your seeds build stronger cell walls which will result in sturdier, more resilient seedlings. Moreover, having it in the soil will also help plants throughout, as their roots will absorb and retain more nutrients year-round.

2. Brighten Up Foliage

You can tell when a plant isn’t getting enough magnesium by the yellowing between leaf veins. Leaves may also show off a marbled appearance.

Magnesium is needed for plants to produce chlorophyll. Chlorophyll is what gives leaves their bright, healthy, green color.

When your plants are looking less than perky, give them some Epsom salt to brighten them up. The dosage (how much to use) is 1 tablespoon for every 12 inches of height of the plant. Do this once every month.

3. Prevent Transplant Shock

It is always risky moving seedlings from a container to the ground or repotting a grown plant.

Oftentimes a plant goes through various stresses when newly transplanted. This is known as transplant shock [1]. As a result, if not properly taken care of, the affected plant may never be the same.

Use it to combat the risks of transplant shock and encourage nutrient absorption. After transplanting, water the affected plants with a mixture of one tablespoon of Epsom salt and a gallon of water.

4. Keep Away Pests

Epsom salt works wonders for preventing many of the undesirable garden pests that might visit when not invited.

Although it won’t kill snails and slugs as table salt does, it will irritate them enough to keep them away from your plants.

Sprinkle around the base of your outdoor and indoor plants. This remedy acts similarly to diatomaceous earth, irritating and scratching the soft bodies of slimy creatures.

5. Good for Fruit Trees

Fruit trees and berry bushes require a lot of water and nutrients. Applying Epsom salt to the roots can help increase production and result in juicier, sweeter fruits.

Dissolve a tablespoon of Epsom salt in a gallon of water and pour it around the base of each tree once per month.

6. Juicier Tomatoes

Every gardener longs for the juiciest, plumpest, brightest red tomatoes on the block. The product is good for your tomato plants because it will help to alleviate magnesium deficiency.

To use Epsom salt for tomato plants, the dosage is 2 tablespoons to a gallon of water. Let it dissolve before applying around the base of your plants.

Repeat this every two weeks to maximize magnesium absorption. Besides, it will also improve the taste and look of your tomatoes.

7. Strengthen Pepper Plants

Similar to tomatoes, peppers also put a heavy burden on their vines. This can expose them to additional health risks and nutrient deficiencies.

To strengthen the vines and improve fruit production, dissolve 2 tablespoons in a gallon of water and apply to the leaves via a spray bottle. You can also follow the instructions above for the tomato plants.

Besides, if you think your pepper plants might be getting too much water, you can apply Epsom salt in dried form. Sprinkle 1 tablespoon per 12 inches of the plant around the base. Do this once every week.

8. Boost Cucumbers

Though it provides cucumbers with a boost of energy that helps them produce more fruits, do not use it as your only fertilizer.

To use Epsom salt for cucumbers, apply 2-3 tablespoons around the base of the roots every four weeks. You can also apply it as a foliar spray by dissolving 2 tablespoons in a gallon of water.

9. Good for Rose Bushes

Do you ever look at your sad, wilted, blossom-less rose plants and wonder what you are doing wrong? The missing ingredient is likely magnesium.

It is believed by many that magnesium increases the number of blossoms that a rose plant yields. Magnesium also helps chlorophyll capture the sun’s energy needed for photosynthesis.

Adding some Epsom salt to the soil when first planting your rose bushes will result in gorgeous roses. Repeat one more time each when there is new growth, and when the flowers are fully blooming.

10. Strengthen Grass Roots

Although some people might not consider their lawn to be part of their garden, it’s still something many of us want to keep healthy and green.

An easy way to do that is by using Epsom salt on your grass to keep the roots strong and the leaves green. While it’s certainly not a complete fertilizer for grass, you can still use it to improve the look of your lawn.

Apply it with a spreader (about 2.5 pounds per 1000 square feet). Alternatively, dilute it in water and spray the desired area.

11. Homemade Weed Killer

Does Epsom salt kill weeds? It will — if combined with other ingredients such as vinegar. However, straight Epsom salt will not kill weeds.

Make a vinegar Epsom salt weed killer by mixing together half a cup of liquid soap, 2 cups Epsom salt, and one gallon of household white vinegar. Dawn dish soap is fine, but we use organic liquid soap in our recipes.

This 3-ingredient homemade weed killer will save you a ton on store-bought products to eliminate weeds or having to pay someone to do it manually.

Where to Buy?

You can get Epsom salt at most pharmacies, supermarkets, or online at reputable gardening stores such as DoMyOwn or SeedsNow.


As you can see, there are many uses for Epsom salts in the garden. It is a handy product and one that should be appreciated by all farmers.

Its wide range of benefits, from increased crop yield to pest control, puts it at the top of the list for natural, effective gardening remedies. Moreover, there are hardly any plants that don’t like it.

Sasha Brown

Blogger and lover of all things natural.

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