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15 Natural and Homemade Fungicides for Plants

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15 Natural and Homemade Fungicides for Plants

You’re in the market for a natural fungicide for plants, but you don’t know where to start. We get it. The options can be daunting; it’s hard to know what’s worth your money.

In this article, we’ll share a few of our favorite organic store-bought fungicides and teach you how to make your own.

1. Soapy Water

You can use soap and water to make an antifungal solution to use on grass and plants.

Just mix 2 tablespoons of organic liquid soap with 1 gallon of water. Mix the solution thoroughly, and then pour it into a spray bottle.

Use it twice a week on houseplants, plant soil, and outdoor plants. It kills mold and lawn fungus.

2. Horticultural Oil

Horticultural oil is also a safe and effective way to treat fungal diseases in plants.

The oil coats the fungi and prevents them from getting what they need to survive, effectively killing them off [1].

3. Painted Daisies

The painted daisy flower contains pyrethrin. It is a common ingredient in commercial fungicides for crops.

To make a DIY fungicidal spray, dry two handfuls of the daisy flower heads and then grind them.

Next, soak them overnight in 4 gallons of water. Finally, strain through cheesecloth before spraying on plants.

4. Organic Milk

You can also use organic milk to create an organic vegetable fungicide.

Some gardeners find that when milk is sprayed on plants, it’s effective at controlling some leaf diseases. It works great for powdery mildew on zucchini [2].

To make this solution, mix one part organic milk with ten parts water. If you don’t have access to organic milk, you can also use regular pasteurized milk.

Pour this homemade fungus spray into a spray bottle and generously spray it on afflicted plants in your vegetable garden.

5. Garlic Spray

To make a garlic fungicide, you will need five cloves of garlic and a pint of water. Blend and strain to remove any chunks, then pour the liquid into a spray bottle.

Spray your plants with it once a week to help prevent any fungus from taking hold. Be sure to reapply after a rain or watering your plants.

6. Cow Urine

Yes, you read that right! Cow urine is actually a great all-natural fungicide that has been used in some cultures.

It’s believed to have antifungal properties, which can help shield your plants from certain fungal pathogens.

Use 100 ml of fresh cow urine, diluted with 1 liter of water, directly on the leaves of the plant.

7. Papaya Leaf Spray

Now, let’s talk about papaya leaf spray. If you’re dealing with fungal plant issues, this is one of the remedies you should try. The leaves contain antifungal properties [3].

All you need to do is take 2 pounds of fresh papaya leaves and grind them into a paste. Now add this to a bucket with 3 gallons of water and let it soak overnight.

The next day, add 2 tablespoons of liquid soap and stir it. Now strain it, and then take a spray bottle and fill it up with the solution.

Shake it up, and then you’re ready to go. Spray infected crops once every two weeks as a control treatment.

8. Clove Oil

Clove oil is also a natural antifungal remedy that you can use to control fungal growth.

It is particularly useful to disinfect non-plant surfaces. All you have to do is mix 10 drops of clove oil with 1 gallon of water.

Spray it on garden tools and other accessories affected by fungus.

9. Horseradish

Horseradish root can be used to make a “tea” that you can use as a homemade fungicide to help treat fungal diseases in plants.

For the recipe, blend one cup of the roots in two cups of water. Let it sit for 24 hours.

Afterward, strain it and add the liquid to 2 quarts of water. Your horseradish tea is now ready.

It is particularly useful in treating brown rot in apple trees.

10. Neem Oil

Neem oil has antifungal properties. It is a great choice for organic gardeners, as it’s environmentally friendly and won’t harm the soil or plants in your garden if used correctly.

When using neem oil as a fungicide, you’ll want to mix 4 tablespoons with 1 gallon of water in a spray bottle. Next, add 3 tablespoons of liquid soap, shake it up, and then apply it to your plants.

You can also buy the concentrate online or at your local garden store. It works great against powdery mildew, rust, and other plant diseases.

It’s also one of the best organic fungicides for fruit trees.

11. Vinegar

You can make a simple fungicide using vinegar.

Add 50 ml (1/4 cup) of white vinegar to one liter of water in a spray bottle. Use it on indoor and outdoor plants that are affected by fungus.

12. Baking Soda Spray

Another home remedy to ward off fungus is to make a baking soda spray. All you’ll need is baking soda, water, and a spray bottle.

Simply mix 1 teaspoon of baking soda with 1 quart of water and pour it into your spray bottle. Add a few drops of liquid soap.

When you’re ready to use it, just spray it on the leaves of your plants. However, it’s best to do this when the sun isn’t shining directly on the plants.

Use this DIY fungicide on roses, hollyhocks, peonies, and crops in your vegetable garden. You can also use it to treat root rot.

13. Cinnamon Oil

Cinnamon oil is another popular home remedy for fungal infections. It is helpful in combating certain plant fungus, rot, and molds.

You can make a spray with 4 tablespoons of cinnamon oil and a gallon of water. Use it to mist your plants.

14. BONIDE Liquid Copper Fungicide

There are a number of non-toxic store-bought fungicides that you can use to protect your plants. BONIDE Liquid Copper Fungicide is one such product.

It offers protection against a number of plant diseases, including powdery mildew, black spot, and anthracnose.

15. Fungastop L&G

Also on the organic fungicide list is Fungastop L&G.

This product can help protect your plants from certain fungal diseases. It also works against certain bacterial diseases and even some pests.


This list contains some great remedies to keep your plants and garden fungus-free without using harsh chemicals.

Andre Campbell

Organic farmer and co-founder of Dre Campbell Farm. He appreciates everything in nature—sunshine, plants, animals, and human life.

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