Hydrogen Peroxide Soil Drench For Fungus Gnats: A Natural Solution

The Best Way to Get Rid of Fungus Gnats with Hydrogen Peroxide


Fungus gnats are a common problem for indoor gardeners. These tiny pests can quickly multiply and cause damage to your plants. While there are many chemical solutions available to control fungus gnats, they can be harmful to both the environment and your plants. In this article, we will explore a natural solution for fungus gnats – hydrogen peroxide soil drench.

What is Hydrogen Peroxide Soil Drench?

Hydrogen peroxide soil drench is a mixture of water and hydrogen peroxide that is used to control fungus gnats. Hydrogen peroxide is a natural substance that is commonly used as a disinfectant and antiseptic. When used as a soil drench, it can help to kill fungus gnat larvae and eggs in the soil.

How to Make Hydrogen Peroxide Soil Drench

To make hydrogen peroxide soil drench, you will need: – 1 tablespoon of 3% hydrogen peroxide – 1 gallon of water Mix the hydrogen peroxide and water together in a watering can or spray bottle. Use the solution to water your plants as you normally would.

How Does Hydrogen Peroxide Soil Drench Work?

Hydrogen peroxide soil drench works by releasing oxygen into the soil. This oxygen helps to kill fungus gnat larvae and eggs by suffocating them. The solution also helps to aerate the soil, which can improve the overall health of your plants.

When to Use Hydrogen Peroxide Soil Drench

Hydrogen peroxide soil drench is most effective when used as a preventative measure. If you notice signs of fungus gnats, such as small flies hovering around your plants or larvae in the soil, it is important to act quickly. Use the soil drench once a week for 3-4 weeks to get rid of the infestation.

Benefits of Hydrogen Peroxide Soil Drench

There are many benefits to using hydrogen peroxide soil drench for fungus gnats. It is a natural and eco-friendly solution that is safe for your plants. It is also easy to make and use, and can be effective in controlling fungus gnats if used correctly.


While hydrogen peroxide soil drench is generally safe for plants, it is important to use it correctly. Do not use a stronger concentration than recommended, as this can damage your plants. It is also important to avoid getting the solution on the leaves of your plants, as this can cause damage.


Hydrogen peroxide soil drench is a natural and effective solution for controlling fungus gnats. It is easy to make and use, and can be a great alternative to chemical solutions. By using hydrogen peroxide soil drench as a preventative measure, you can keep your plants healthy and free from fungus gnats.