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Lynn has been a professional organic farmer for the last 35 years and runs a 210-acre farm in Western Colorado with her husband.

Find the right treatment for your plants.

Find the right treatment for your plants.

What's the Best Treatment for Powdery Mildew?

As the days are getting shorter and the nights are getting cooler in the fall, a white powdery substance can descend upon your garden and wipe out your plants. Almost every garden can be plagued by this white powder. It is a fungus called powdery mildew, and it preys upon cool, damp gardens. Even those of us that live in the high desert can get powdery mildew in our gardens in the fall.

If this is happening to your garden every fall, you can safely and naturally control the spread of this fungus with just a few simple home ingredients. Here are six homemade recipes for you to use in your garden to control powdery mildew.

6 Homemade Sprays for Powdery Mildew

  1. Baking Soda Spray
  2. Milk Spray
  3. Listerine Spray
  4. Hydrogen Peroxide Spray
  5. Vinegar Spray
  6. Neem Spray

1. Baking Soda Spray

The first one is baking soda spray.

Ingredients

  • 3 tablespoons of baking soda
  • 1 tablespoon of cooking oil
  • 1 teaspoon of dish soap
  • 1 gallon of water

Instructions

  1. Mix 3 tablespoons of baking soda with 1 tablespoon of cooking oil and 1 teaspoon of dish soap.
  2. Mix that with a gallon of water.
  3. Use the resulting mixture for your spray.

2. Milk Spray

Number two is milk spray.

Ingredients

  • Milk (it doesn't matter what type)
  • Water

Instructions

  1. Mix 2 parts of milk to 1 part water.
  2. That's your second spray.

3. Listerine Spray

The third one is Listerine spray.

Ingredients

  • Listerine mouthwash
  • Water

Instructions

  1. Mix 1 part mouthwash to 3 parts water.
  2. Use your spray.

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4. Hydrogen Peroxide Spray

The fourth option is hydrogen peroxide spray.

Ingredients

  • 3% hydrogen peroxide
  • Water

Instructions

  1. Mix half a cup of 3% hydrogen peroxide per gallon of water.
  2. Use the spray.

5. Vinegar Spray

The fifth method is vinegar spray.

Ingredients

  • 5% vinegar
  • Water

Instructions

  1. Mix 3 tablespoons of 5% vinegar per gallon of water.
  2. Use your spray.

6. Neem Spray

The sixth option is neem spray.

Ingredients

  • Neem oil

Instructions

  1. Mix the neem oil.
  2. Follow the manufacturer's instructions, because (depending on the brand you buy) there may be different strengths.
  3. Use the spray.

Best of Luck With Your Garden!

With a few ingredients that you already have around the house, you can keep powdery mildew from cutting your garden season short. I want to thank you for reading, and until next time, may your garden be easy, fun, productive, and always organic.

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2021 Lynn Gillespie

Comments

Peggy Woods from Houston, Texas on October 02, 2021:

Thanks for these tips on ways to treat powdery mildew in our yards and gardens. I'll pin this for future reference.

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