Fungus Gnat Pests on Indoor Plants! If you have an especially precious or delicate plant, I wouldn’t recommend this as your first choice. Getting rid of the gnat eggs and larvae stops more bugs growing and helps break the life cycle. Continue to water the plants with the hydrogen peroxide mixture once each week. Use 1 part hydrogen peroxide to 3 parts water. Healthy houseplants have healthy roots, and oxygen is needed for root health. Luckily, there are few things you can do to make your houseplants less welcoming for them in the first place. Hydrogen peroxide is my go-to way of controlling fungus gnat larva and other soil fungus problems in my houseplants. The hydrogen peroxide mixture also helps kill any harmful bacteria and emerging fungi. Hydrogen peroxide is a natural substance that will help kill bugs and release oxygen into the soil. Regular 3% Hydrogen Peroxide can be mixed as a watering solution. Neem oil can also be diluted with water and applied to the soil to kill larvae. How Hydrogen Peroxide prevents root rot/over watering. High Oxygen levels at the roots will encourage rapid healthy root growth. Similarly, you may ask, how do you kill gnats with peroxide? Hydrogen peroxide (H2O2) is one of the best natural methods for killing gnats that have taken up residence in your home. Moreover, Hydrogen peroxide is a simple home remedy to kill nats larvae and destroy knats eggs in seconds, hydrogen peroxide has a powerful effervescence which is a results of chemical reaction with the soil components including gnats stages.. How to get rid of soil fungus gnats the right way? Using a 3% mix one part hydrogen peroxide with four parts water and water your plants with it once a week until the gnats are gone. A 4:1 ratio of water to 3% hydrogen peroxide would be safe for plants and effective for killing off fungus gnat larvae. Easy gnats in houseplants home remedies include spraying your plants down with Neem Oil or repotting the plant into fresh soil. To treat fungus gnats, mix hydrogen peroxide with three parts … The cinnamon will kill the soil gnats. Fungus gnats also don't cause much harm to plants either, but they can be super annoying to have around. Not only is hydrogen peroxide for fungus gnats a natural remedy, but it’s safe to use around your family, pets, and garden plants. This common household solution destroys larvae and eggs on contact. I sprayed the plant’s soil with hydrogen peroxide the moment I found them. If you know that larvae are present in the soil around your houseplants, using diluted hydrogen peroxide can get rid of them. 9 EASY Solutions To Fungus Gnats! Hydrogen peroxide is also made up of the same atoms that water is made from with the exception of an additional oxygen atom. The hydrogen peroxide will kill the gnats on the top of the soil and it will kill the larvae as it soaks down into the soil. 6. We want your house to be a gnat-free zone! Not only will the natural home remedy kill fungus gnats in all of their life stages: eggs, larvae, pupae, and adult, but you can use hydrogen peroxide for plants without killing them. Spray the mixture onto the entire plant and watch as the dish soap mixture kills the fungus gnats. Use 1 part HP to 4 parts water. Then after work (8 hours later), I decided to just replace the soil instead because I’m paranoid of it getting worst. Use roughly 1 part hydrogen peroxide mixed with 5 parts water to water dry soil will help kill everything off. Hydrogen Peroxide Solution. | How To Get Rid of Fungus Gnats in Houseplants! Water the plants thoroughly using a solution of water and three percent hydrogen peroxide. Keep the solution aside and allow the top layer of soil to dry completely. Mix four parts water with one part hydrogen peroxide and soak your soil with the solution. If you don’t have either of these handy, you can combine a tablespoon of dish soap to a quart of water in a spray bottle. Then make a solution of 1 part “3% hydrogen peroxide” and 4 parts “Water”, let it rest for 30 minutes. Hydrogen peroxide cleanses the soil and the larvae along with it. Not only will the natural home remedy kill fungus gnats in all of their life stages: eggs, larvae, pupae, and adult, but you can use hydrogen peroxide for plants without killing them. The soil will fizz when it comes in contact with the solution for a few minutes after application. This morning I found some gnats in one of plants that actually been growing really well. During the application, you will notice the soil has fizzed. For bugs like these fungus gnats, it needs to be a little stronger. The solution will kill the larvae, but is harmless to your plant. Spray plants and the surrounding soil with the hydrogen peroxide to control mites, gnats, aphids or other small insects. Hydrogen peroxide (H2O2) is one of the best natural methods for killing gnats that have taken up residence in your home. Some home gardeners swear by pouring three percent hydrogen peroxide directly into your plant soil. We love hydrogen peroxide (H2O2) because it breaks down into simple water (H2O) and oxygen (O2) – so it’s totally environmentally safe. If infestation persists, dry the top layer of soil. This extra oxygen (H2O2) gives hydrogen peroxide its beneficial properties. Hydrogen peroxide is an excellent and inexpensive method for killing and adult fungus gnat infestations in the house and garden. Hydrogen Peroxide – Controls larvae Mix one part 3% hydrogen peroxide with four parts water. Place yellow sticky traps near the infested plant. Hydrogen peroxide solution will kill any Gnat larva or eggs in the soil. Reapply the hydrogen peroxide solution once a week until you see that the fungus gnats are gone. fungus gnats [source: UCDavis]. You can also use neem oil as a spray to kill adult flies on contact. Hydrogen Peroxide. I have read several articles in gardening and horticulture websites regarding the uase of peroxide to kill fungus gnats. An effective way of attacking fungus gnats larvae is to spray diluted 3% Hydrogen Peroxide on plants and the soil. Spray it on adult gnats and any visible worms. The tips that ukhouseplants will provide have worked a treat over the last few years, so don't worry if there are other methods online.. As with Vine Weevils, there are two stages to eliminate Fungus Gnats.The first stage is to remove the larvae and THEN the airborne specimens. For anti-fungal uses you would dilute it to about 3% strength. This helps stop the Oxygen from being depleted in the water filled air spaces until air can get back into them. We covered several tactics such as using insecticides, repotting your plants, and using fly … The soil will fizz for a few minutes after application; this is normal. Method. 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