Unbelievable Hydrogen Peroxide Uses In Garden You Should Know

Is it possible? Are there Hydrogen Peroxide Uses in the garden? Well, yes, it can be useful! Read on to find out how.

How & Why Hydrogen Peroxide is So Useful

Hydrogen peroxide (H2O2) has an extra oxygen atom than Water (H2O), this extra oxygen atom breaks down and the molecule of water releases from this separately. It is this extra oxygen atom that makes the hydrogen peroxide so useful. The Hydrogen peroxide is used in cleaning, bleaching, sterilizing, as a disinfectant etc. but it can also be used in horticulture. In simple words, Hydrogen Peroxide acts as an oxygen supplement for plants (beneficial if used in low strength). It works by releasing oxygen and also aerates the soil.

Here’s a very helpful article if you like to read.

Hydrogen Peroxide Uses

1. Hydrogen Peroxide Uses Against Root Rot

Overwatering causes the shortage of Oxygen at the root zone. If you overwater the plant, the water fills the air spaces in soil and the plant’s roots suffocate due to the lack of air and they begin to die after 24 hours. To save such a plant from this problem, water it thoroughly with 3% hydrogen peroxide mixed in 1 quart of water. The extra oxygen in the hydrogen peroxide provides the roots their much-needed oxygen to survive. After this, don’t water the plant until top 1 or 2 inches of soil dries out well.

Read more about this here

2. Using Hydrogen for Faster Seed Germination

Using hydrogen for faster seed germination

You can use hydrogen peroxide to help seeds germinate more quickly. Hydrogen peroxide softens the coat of seeds and kills any pathogen present on seed coat thus increase the germination rate and help the seed germinate faster. Soak your seeds in a 3% hydrogen peroxide for 30 minutes. Rinse the seeds several times with water before planting and plant them as usual.

3. Hydrogen Peroxide for Mold and Mildew

Hydrogen peroxide has an oxidizing property that is fatal for mold and mildew. Mix a liter of water with 10 tablespoons of 3 to 6% hydrogen peroxide depending on the level of infection. Spray this solution on plants daily until the fungus disappears.

4. Hydrogen Peroxide as a Fertilizer

Watering flowers

Use hydrogen peroxide to help strengthen the root system of your plants. Hydrogen peroxide has one extra oxygen molecule (than water) that helps plant’s roots to absorb nutritions from soil more effectively, you can use this formula occasionally to boost the growth– Mix about 1 teaspoon of 3% Hydrogen peroxide with 1 gallon of water.

*Read more about this on eHow here.

Caveat: Make sure that you do not use more concentrated hydrogen peroxide as it can kill plants. 3% strength is the most familiar concentration and usually recommended.

5. To Keep Pests Away

Keep pests away with hydrogen peroxide

The hydrogen peroxide can be used as a pesticide. Spraying the plant thoroughly with 3% hydrogen peroxide mixed in the equal amount of water kills the pests and their eggs. The hydrogen peroxide also kills the bacteria that develop on fruits and vegetables.

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Is it possible? Are there Hydrogen Peroxide Uses in the garden? Well, yes, it can be useful! Read on to find out how.


    • I don’t think it would but you could always try. Maybe, putting a worm in a pot with little soil, spray some in there and check back in 2 days. Spray both days.

    • I sub to a couple of YouTube orchid channels. Both use H.P. often: whenever a cut needs to be made, for tiny snails and slugs that get in, for fungus, root rot, etc.
      Stick with 3% and most plants will be OK. Not sure about African Violets or other very tender ones.

  1. I put worms in my flower beds because here in Ms. the soil has a lot of clay the worms crawling around (I bought the at a fish bait stand) keep the soil from getting to packed and they leave good fertilizer.

    • There is no such thing as foodgrade Hydrogen Peroxide. HP is toxic to animal life forms. I’m not even all that sure about plant life forms. By what means is the “extra” hydrogen ion being separated from the other ions in the molecule? What is the catalyst or the process that turns H3O into H2O and H+?

    • would like to know as well… I have been wanting to make some containers to catch rainfall because we are always in a drought in south Texas. So far I have read articles of people using gold fish to eat the larva, some have used a fish tank bubbler to a movement on the water surface to prevent mosquitos from laying their eggs. if HP works on killing larva, I would think this is the easiest and cheapest route.

  2. I live in central Florida and I have used Hydrogen peroxide (bought in grocery store) for over a year in my bubbling water feature and it does keep the water clean, no nasty green stuff. I have to add 8 oz to the pot holding the water (4-5 gallons) once a month as I also have to add water that evaporates.