July 10, 2020


One of the biggest frustrations among gardeners is plant fungus. They can be some of the most persistent issues that may completely ruin your grow if not treated properly. Whether your plants are indoors or out, there are many factors that can contract it to pick up bacteria which then turns to fungus.

The most common way to treat fungus on your plants is by purchasing a fungicide, however, some of the fungicides on the market may not actually be safe for your plants or even you as a human-like they claim.

Lately, a lot of gardeners have figured out that you can use a simple solution that many people already have in their homes to treat fungus. The solution to fungus is, baking soda! It can effectively treat your plants and get rid of all the nasty bacteria causing the fungus to grow on your plants.


There are many strains of fungus that can harm your plants and it’s important you know which. Though baking soda can be used to treat them all, it’s good to have some knowledge of each type.

The most common type of fungus you will find in your garden is powdery mildew and this is the fungus we will be covering in this article.

Powdery Mildew

Powdery mildew is a very common fungal disease and it can cause severe damage to both indoor and outdoor plants. Powdery mildew begins with what looks like raised bumps on leaves that will cause them to curl and expose the bottom surface.

The infected leaves will then start to grow what may look like mould or a powdery white/grey growth which usually infects the top surface of the leaves and unopened buds. The buds on the plant may never open due to the powdery mildew and can cause your plant to turn brown and lose its leaves.

If left untreated, powdery mildew can ultimately lead to your plant dying completely.


Baking soda is a very effective yet gentle solution to removing fungal problems on your plants. Extensive research has shown it’s very effective against powdery mildew and is completely harmless to animals so it’s a very safe product to use.

The great part about the baking soda solution is it can be used not only as a treatment but an effective preventive measure against fungus. It’s rather hard to totally eradicate fungus but using this treatment on a weekly basis will help to ensure the removal of it.

The only downside is, you can’t store this product very well so you need to make sure you use the batches you make.


  • 1 gallon of water
  • 1 half teaspoon of liquid soap/insecticidal soap
  • 1 tablespoon of baking soda

Mix this all together and put in a spray bottle or you could just administer it from the mixing container.

You should ensure to spray the plant completely on both the upper leaves and the lower leaves and it’s very important to let the plant dry. Repeat this as you see fit to control any problems you may have with fungus on your plants.

Adding liquid soap into the solution will actually help the mixture stick to the leaves and stems of the plants and help to disperse it better. However, there are some precautions you have to take as it can cause burning of your plants.

To avoid the mixture burning your plants you should avoid applying the solution when plants are exposed to full sun conditions, test your mixture on a small section of the plant first before you begin to spray the full plant and always water your plant a few days prior to applying the mixture.

Another solution that some gardeners swear by is to add horticultural oil to this mixture which also helps the mixture stick to the leaves and suffocate the fungus. If you find that this doesn’t work you can also try using milk, it’s a very safe remedy and a lot of people claim it works. It could be worth a try as it won’t harm your plants!

If you find that even after treating the plants continually and there has been no improvement, then consider using a stronger antifungal solution.


A lot of fungal plant problems are treated with commercial antifungal treatments which some of them can do more harm to your plants than good. Many issues you may be facing with your plants can be treated with more natural remedies and home remedies such as baking soda. Don’t be afraid to give these home remedies a go, as it can save time, money and ultimately it can save the life of your plant.

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