How to use Epsom salts on your lawn

Written by lori lapierre | 13/05/2017
How to use Epsom salts on your lawn
The grass is greener with Epsom salts. (AlinaMD/iStock/Getty Images)

When spring rolls around, lawn enthusiasts rush to apply seed, fertiliser and weed killer, anxiously waiting for their grass to turn a lush green. Common Epsom salts provide an easy, inexpensive method to green the lawn. Usually used to soak achy feet, Epsom salt is not really a salt, but a mix of magnesium and sulphur. Both ingredients benefit a lawn by increasing the production of chlorophyll, promoting seed germination, and aiding the components of fertiliser.

Mix 240 g (1 cup) of Epsom salts with 237 ml (1 cup) of ammonia. Add water until the mixture equals 1 litre (1 quart) of fluid, and place the solution in a sprayer. Attach the sprayer to a hose and spray the mixture on your lawn, covering up to 232 square metres (2,500 square feet).

Combine 1.36 (3 lb) of Epsom salts with one bag of lawn fertiliser. Set your lawn spreader on medium and apply half of this mixture to the lawn.

Stir 125 g (1 lb) of icing sugar and 1.8 kg (4 lb) of Epsom salts into the lawn fertiliser using a large spoon or a gloved hand. Using your spreader, apply the mixture onto the lawn at a medium setting.

Blend 240 g (1 cup) Epsom salt, 237 ml (1 cup) liquid soap, 237 ml (1 cup) ammonia, two cans of beer and 237 ml (1 cup) Listerine mouthwash. Add enough water to make 4.5 litres (1 gallon) of fluid and apply to 232 square metres (2,500 square feet) of lawn using a sprayer attachment on a hose.


Apply one of the fertiliser mixtures every two weeks as needed to acquire and maintain a green lawn. Plants create sugar during photosynthesis; the addition of icing sugar aids in speeding up the process. Epsom salts are non-toxic and safe to children and animals in this application.


Epsom salts will clump together in areas of high humidity. Store in a cool, dark place.

Things you need

  • 1.36 to 1.8 kg (3 to 4 lb) Epsom salts for every 1,250 square metres (1,250 square yards) of lawn to cover
  • Lawn fertiliser spreader
  • Water
  • Bag of lawn fertiliser -- 20-5-10 slow release dry lawn food, enough to cover 232 square metres (2,500 square feet)
  • Ammonia
  • 454 g (1 lb) bag of icing sugar
  • 2 cans of beer
  • Listerine mouthwash

Show MoreHide

  • All types
  • Articles
  • Slideshows
  • Videos
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the site, you consent to the use of cookies. For more information, please see our Cookie policy.