If you are treating a sick plant or one infested with insects, use a slightly stronger mixture of one tablespoon of hydrogen peroxide in eight ounces of water. Don't use hydrogen peroxide on your plants more frequently than twice each week. If you make more than you need, you can store it.
Use a spray bottle to soak the infected plants thoroughly. Make sure to get the undersides of the leaves, top of the soil, and around the pot itself. Spray once a week or as you see bugs appear. The hydrogen peroxide will not kill eggs, so you may need to repeat the treatment weekly to remove all the bugs.
I would only use it as often as is necessary, but wouldn't recommend using it more than twice a week. What is this? If I'm treating a plant for pests or root rot, I'll either spray the leaves or the soil with a hydrogen peroxide solution once a week until the issue has been resolved.
It also breaks down into the soil and releases extra oxygen that helps the plant grow new, healthy roots. Before you use hydrogen peroxide on your plants, you'll need to dilute it. Mix one part of 3 percent hydrogen peroxide with two parts water in a watering can or spray bottle.
For planted seedlings: Spray with H2O2 solution of 1 part H2O2 3% to 32 parts water (eg: around 30mls per 1 litre - measuring cup recommended). For established plants: Mix 1:1 ratio of 3% H2O2 and water (eg: 1 cup of each).
As an added bonus, hydrogen peroxide can help discourage unwanted bacteria/fungi that may be lurking in the garden. To give plants an added boost of oxygen or for pest control using the 3% solution, add 1 teaspoon (5 ml.) per cup (240 ml.) of water in a spray bottle and mist the plant.
Using hydrogen peroxide in plants aerates the soil to create a healthy growing environment. Aeration is one of the most essential elements of healthy soil, and it helps improve root health, nutrient uptake, and encourages beneficial bacteria growth.
If you decide to use a bit more, please make it only a little bit more, don't get carried away. Gardening with hydrogen peroxide is great, but too much can harm your plants.
Hydrogen peroxide (H2O2) was initially recognized as a toxic reactive oxygen species, able to cause damage to a variety of cellular structures. However, it became clear in the last decade that H2O2 can also act as a potent signalling molecule, involved in a plethora of physiological functions.
When using hydrogen peroxide for plants, the solution is generally diluted, making it safe for roots. To make a safe hydrogen peroxide mixture, start by mixing 1 part hydrogen peroxide with 9 parts water. Next, soak the roots in the solution for 30 minutes.
Hydrogen peroxide kills root rot-causing bacteria and fungi and restores the oxygen balance in the soil which boosts your plants' growth and health. Due to its chemical similarity to water, hydrogen peroxide is one of the safest chemicals you can use in the garden to combat root rot.
Hydrogen peroxide is effective at killing 97% of bacteria, viruses, mould spores, and fungi that are causing your plant to perish. Hydrogen peroxide kills root rot-causing fungi and restores the oxygen balance in the soil which helps your plant root system recover.
Apart from being more mindful of how often and how much water you give your plants and plant roots, you can also use a mixture of 3 percent hydrogen peroxide concentration mixed in 1 quart of water once a week to encourage healthy root growth in your plants' roots or treat the spread of root rot and root decay.
Mix one pint of 3% hydrogen peroxide into a gallon of water. Water the entire plant, soaking the roots thoroughly, once every week. This oxygenates the root area, promoting development during any stage of the plant's life.
Treat the soil.
Use 1-2 tablespoons of hydrogen peroxide per cup of water, and mix enough to saturate the entire root ball. Mix well, then apply to the soil. Hydrogen peroxide is root safe though it can look a little scary, because it will begin to bubble up when poured in. This is normal!
Make an apple cider vinegar trap
Stir in a few drops of liquid dish soap and place the trap near the base of the affected plant or on top of the soil. You will need to refresh these traps every few days as they attract and kill the adult fungus gnats.
After you've cut off any dead roots, we recommend soaking them in an 80:20 solution of water to hydrogen peroxide. Five minutes or so should be sufficient.
Hydrogen Peroxide (H2O2) must be diluted for safe use. To dilute to a 3% solution use 1 part 12% food grade Hydrogen Peroxide to 3 parts distilled water. For example, to make 400ml of 3% H2O2, use 100ml of 12% H2O2 with 300ml of distilled water.
Dilute 2.5ml hydrogen peroxide and 3 drops of neem oil to a 7500ml spray bottle to spray leaves. 2.5ml ammonia and 2.5ml neem oil once a week for pest control in spray bottle.
Another product that'll help prevent the spread of root rot is non-flavoured cinnamon. After having removed the dead roots, sprinkle a thin layer onto the healthy tissue before placing into a bed of new compost.
Hydrogen peroxide, well known as an ingredient in disinfectant products, is now also approved for controlling microbial pests on crops growing indoors and outdoors, and on certain crops after harvest. This active ingredient prevents and controls bacteria and fungi that cause serious plant diseases.
Mix 2 parts water, 1 part hydrogen peroxide, soak your soil with this mixture.