Powdery mildew is a mold that can infect your cannabis plant to the point where the buds will be unsmokable. Once you have it on your plants it can become systemic and uncontrollable. If it infects your crop then you could have a big problem.

Luckily, it’s one of the easier problems to deal with if you catch it early. There are a variety of remedies that can help you battle a powdery mildew outbreak.

Hydrogen peroxide is a great way to naturally kill powdery mildew on your cannabis plants. You can spray it in the soil or on the leaves without damaging the plant. Hydrogen peroxide is both antibacterial and antifungal which make it effective against many issues.

This household staple can be found in any grocery store or pharmacy and is a readily available cure for many problems in your cannabis garden. Let’s look into how powdery mildew is controlled by hydrogen peroxide.

Does Hydrogen Peroxide Eliminate Powdery Mildew?

Since hydrogen peroxide is an anti-fungal agent it can dissolve an infection caused by powdery mildew. The main problem with this mildew is that it likes to send its spores out to find unsuspecting plants to infest.

So while you may have a good weapon against powdery mildew, there are additional steps that you can take to ensure the safety of your garden.

How To Use Hydrogen Peroxide For Powdery Mildew

Using hydrogen peroxide on your cannabis plants is a simple task and shouldn’t take more than a few minutes of your time.

Here are the steps to apply hydrogen peroxide to your plants.

  1. Make sure to remove all heavily infected fan leaves from your plant. This involves storing them in a Ziploc bag and disposing of them outside of your garden. Try not to shake the leaves too much because the spores can be released into the air.
  2. In a spray bottle, you want to mix one part 3% hydrogen peroxide with three parts water. This dilution will still be strong enough to battle the mildew but not harm your plants.
  3. Spray the affected areas of your cannabis plant once a day until the mildew is gone. You can keep the bottle on hand for any breakouts that may come back.

It is important to note that you shouldn’t be using any foliar spray when your cannabis plants are in full flower. Saturating your cannabis buds with any kind of spray can introduce weird flavors and potential issues with bud rot.

What Else Can I Use For Powdery Mildew?

There are many ways to battle this unpleasant issue with some being available in your pantry right now.

Here are some of the other common remedies for this type of mildew and their respective measurements for a spray:

  • Apple cider vinegar – 3 teaspoons per gallon of water
  • Milk – 1 part milk to 4 parts water
  • Baking soda – 1 teaspoon per gallon of water
  • Potassium bicarbonate – 1 teaspoon per gallon of water

Final Thoughts

Powdery mildew is a shock when you see the white fuzz appearing on your fan leaves. However, it isn’t a cause for alarm right away as in the early stages it is easily managed and eliminated.

Learn more interesting facts about growing cannabis – autoflowers and mold, white spots on cannabis leaves, neem oil for cannabis, and many more!

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