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Homemade Weed & Feed

By Ann White ; Updated September 21, 2017

Weed & Feed is a commercially manufactured fertilizer for turf lawns that gained its popularity by also containing ingredients that aid in the prevention of weeds. For those on a tight budget, purchasing Weed & Feed monthly for a lawn can get tough. Weed & Feed also carries a disadvantage for organic gardeners due to its high chemical content. Thankfully, a similar formula can be made with common kitchen ingredients and some organic fertilizers to produce a product that not only performs as well as Weed & Feed, but is pet-, kid- and environmentally-friendly as well.

Heat the water in the microwave until it reaches a temperature of 140 degrees. This temperature will allow ease of mixing for the solid ingredients and promote dissolving for those ingredients in their crystal form.

Pour the water into the large mixing bowl and add the fish fertilizer, kelp extract and Epsom salt. Mix all the ingredients into the water until well blended and semi-dissolved. Leave the mixture sitting overnight to further dissolve the dry ingredients. The fish and kelp fertilizers provide the lawn with the necessary phosphorus, nitrogen, potassium and plant hormones to grow quickly and be very green. Epsom salt provides magnesium, which most grass varieties need for optimal growth.

Add in the remaining ingredients and stir until well-blended. The apple cider vinegar and coffee grounds add acidity to the soil, ensuring a balanced soil pH. A balanced pH in the soil, is actually what prevents most weeds from forming, as weeds thrive in highly acidic or highly alkaline soil, but tend to do poorly in balanced soil. Molasses adds iron to the lawn, which is necessary for greening. Beer promotes microbial activity in the soil, which promotes efficient nutrient absorption. Ammonia breaks down the nitrates in the soil, promoting faster breakdown of the organic ingredients. Finally, dish soap and tea tree oil are anti-fungal and insect-repelling agents.

Pour the mixture into a 20-gallon hose and sprayer and apply evenly over the entire lawn monthly. Water the lawn well after the application to ensure optimal absorption into the soil.


Things You Will Need

  • 3 cups water
  • Large mixing bowl
  • 2 tablespoons fish fertilizer
  • 1 teaspoon kelp extract
  • 1 tablespoon Epsom salts
  • 2 tablespoons apple cider vinegar
  • 2 tablespoons molasses
  • 1 cup coffee grounds
  • 1 can beer
  • 1/2 cup liquid dish soap
  • 1/2 cup liquid ammonia
  • 1/4 cup tea tree oil
  • 20 gallon hose and sprayer

About the Author


Ann White is a freelance journalist with prior experience as a Corporate and Business Attorney and Family Law Mediator. She has written for multiple university newspapers and has published over 300 articles for publishers such as EHow and Garden Guides. White earned her Juris Doctor from Thomas Jefferson School of Law and a Bachelor of Arts in English literature.