How to make your own Lawn Fertilizer

July 5th, 2016

Making a homemade lawn fertilizer is a great way to save money and improve the health of your lawn. Here are several homemade lawn fertilizer recipes using cheap household products, which also contain vital nutrients that will help your lawn grow. Keep in mind, your grass is a living thing and it needs certain nutrients in order to grow lushly. Within your grass, there are microbes and bacteria that also help your grass grow, so you want to keep them happy too.




Recipe #1

  • 1 can soda (not diet)
  • 1 can beer
  • ½ cup dish soap (not antibacterial)
  • ½ cup ammonia
  • ½ cup mouthwash
  • 10 gallons of water


The sugar in the soda will feed the microbes by providing them with carbohydrates. Beer is full of all sorts of organic material that will promote the health of your grass and the bacteria that live within it. The soap helps the grass absorb the nutrients, however don’t use antibacterial because you want the bacteria to thrive. You can substitute shampoo for dish soap if you prefer. The ammonia provides your lawn with the vital nutrients of hydrogen and nitrogen. Finally, the mouthwash is a great pesticide that will keep the bugs away without killing your lawn.


Recipe #2

  • 1 can beer
  • 1 can soda (not diet)
  • 1 cup baby shampoo
  • 10 gallons of water


This is essentially the same recipe but without the mouthwash to provide pesticide power. The baby shampoo is guaranteed to be easy on your grass.


Recipe #3

  • 16 tsbp. Epsom salts
  • 8 oz. ammonia
  • 8 oz. water


Epsom salts are nature’s fertilizer. In fact, you can use them on all of your household and outdoor plants. Want amazing smelling roses? Give them some Epsom salts. Want larger and more flavorful vegetables – Epsom salts. Tired after working on your lawn all day – take a bath in Epsom salts! They are a very versatile item to have around.


Now that you have these recipes, when exactly should you fertilize? You only need to fertilize once or twice a year in the spring and fall. There’s no reason to fertilize in the summer, as it will be ineffective. Most lawn grasses are semi-dormant in the summer, so fertilizing in the fall will ensure you have excellent grass in the spring.


Natural Weed Control

The rest of the time you can focus on keeping the weeds under control and there’s a great spot treatment recipe for that too:


  • 5 parts White Vinegar
  • 2 parts water
  • 1 part dish soap


Keep in mind that vinegar can burn your grass, so use this only to spot treat weeds with a hand pump sprayer.


Weeds can also be an indicator of what type of fertilizing your lawn needs. For instance, dandelions grow well when the pH level of your yard is 7.5. This is a sign that you need to lower the pH of your lawn by adding sulfur. If you have clover, then your lawn needs more nitrogen, which can be added with the recipes that use ammonia above. You can also add compost, as it is typically high in nitrogen as well. Another option is to add corn gluten. Corn gluten kills weed seedlings and also adds nitrogen.


Follow these recipes and watch what types of weeds grow in your yard. Soon you’ll be able to fertilize and kill weeds at a fraction of the cost of store bought products.

Continue following our blog for more tips on lawn care and information about our friendly robotic lawn mower.