Organic Fungicide For
Treating Lawn Disease

Natural Fungicide Treats Fungal Diseases

Treating lawn diseases with organic fungicide or making your own homemade fungicide will get you on your way to a disease free lawn.

Once you've diagnosed the problem accurately, you'll also need to know that turf grass diseases aren't always the same from year to year. Some years will be more severe than others.  Cooler temperatures and too much moisture activate fungus growth.

Lawn care practices using natural fungicides will be affected by weather conditions each year as well.

Some diseases are only active in certain seasons, while others can strike at any given time.

Poor lawn care maintenance and practices, such as improper watering, can contribute significantly to all kinds of lawn fungal disease.  Knowing when to water is key to healthy lawn maintenance. 

Homemade Organic Fungicide Recipes

We did ask if you wanted to learn how to make your own natural fungicide. Here are a few recipes to try at home.

Baking Soda Mix

  • 1 gallon water
  • 1 generous tablespoon baking soda
  • 2 1/2 tablespoons vegetable oil

Mix well and spray the affected plants and turf blades. Give it a good shake from time to time to keep it well mixed.

Corn Gluten Tea

Another excellent fungal disease control is Corn gluten meal. You can even make a simple tea with it. Just don't drink it!

  • 4 teaspoons corn gluten meal in an old nylon stocking
  • 1 gallon water

Simply soak the meal filled stocking in the water for at least one half an hour. Spray the tea directly on the fungus.


Yes, your everyday milk that you have on hand in the refrigerator makes an excellent lawn organic fungicide.

  • 2 ounces milk
  • 120 ounces water

Mix together and target spray the affected areas over a period of three weeks. 

Fungal Diseases Harder To Control

Fungal diseases are often spread by zoospores that are transported from one plant to another and from lawn to lawn. (They're really not little zoo animals at all!) Fungi grow in the infected plants and are able to penetrate the plant and reproduce rapidly. This makes them hard to reach.

As a bit of a side note here, that's why you want to be careful not to take the lawn mower to mushrooms growing on your lawn. You'll encourage the spread of the spores and then of course, you'll have an even larger crop of mushroom plants.

There are many good quality organic fungicides available in the marketplace. They may be categorized as being either contact - where they work on the outside of the plant, or systemic - where the fungicide works from inside the plants and are usually the most effective.

Before buying any turf disease product, Jim and I recommend that you read the label carefully to know what directions to follow and if the particular product will control your specific fungus disease type.

Lawn Diseases

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Jim & Jill Carty of Organic Lawn Care Guide


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Corngluten Meal makes an excellent organic fungicide.

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