Why You Should Use Hydrogen Peroxide For Your Plants

Hydrogen peroxide in brown bottle.

Soaking your plants with hydrogen peroxide solution is like watering your plants with natural rainwater. It is composed of substances found in raindrops that will help your plants absorb more nutrients.


Should You Use Hydrogen Peroxide For Your Plants?

Most gardeners are frustrated seeing mold growth and fungus in their garden. Another thing that frustrates them is when store-bought chemicals or other natural home remedies fail to help.

But did you know that using ordinary home solution may look strange, yet much evidence shows it is excellent in treating fungus, eradicating molds, dealing with gnats, and even great for your plant roots.

Almost every household uses hydrogen peroxide as a disinfectant and aid in cleaning. Others used this chemical to kill mites and remove algae from their home aquarium. In addition to that, disinfecting smaller cuts or wounds is one of its uses too.

Are you excited to know what wonders this chemical can do to your plants? Then let me introduce you to hydrogen peroxide, and give you several reasons why you should start using this on your plants now. Alright, let’s begin!


How Does Hydrogen Peroxide Work For Your Plants?

When it comes to gardening, this commonly used household chemical substance has quite positive effects on plants. It does much more to plants compared to tap water.

It possesses a chemical compound similar to rainwater, and when you soak your plants with this solution, it is like watering your plants with ordinary rainwater.


Hydrogen Peroxide in Gardening

With the right mixture, using hydrogen peroxide in gardening is simple. This guide can give you an idea of how to exactly mix and apply the solution to your plants.

  • Overall, you will rid out all the fungus and built-up molds around the roots of your plants by soaking it into the solution.
  • Mix 1 cup of hydrogen peroxide with 32 cups of tap water and head onto the garden in the evening.
  • Pour the solution only to the roots, avoiding the flowers and leaves of the plants.
  • If you need to treat seeds, a bit stronger mixture of a solution is sufficient. An ounce of hydrogen peroxide in 2 cups of water help seeds stay healthy and grow faster.

Here are some reasons below why using hydrogen peroxide is beneficial to your plants and your garden.


Soil Aeration and Treat Root Rot

The potting mix treated with hydrogen peroxide is packed with oxygen and has better aeration.

In gardening, one of the most important things you must provide for your plants is the soil aeration to ensure productive gardening.

Compacted soil may cause your plants to die, so try to pull up your plants and check the roots, and when the roots are all tangled up, then it means that your plants are poorly aerated and on the struggle to survive. In addition to that, you will also find indications of diseases in the roots due to this.

Root rot is one of the problems plant growers have, and root rot occurs when the soil is too compacted. Soil compaction usually happens when you overwater your plants and becomes the most common cause of root decay.

Container growers do not solely suffer from root rot. It also happens in plant bedding. Dense and impenetrable dirt can last even for years, and not planting on it won’t treat the soil from waterlogged.

An indication your plants suffer from root rot is when the leaves gradually turn into yellow while its branches will slowly droop and the plant will eventually die.

However, this is when hydrogen peroxide comes into the rescue. Hydrogen peroxide helps aerate the soil when absorbed by slowly breaking down and releasing oxygen. This oxygen helps the roots to breathe and encourage the plant’s roots to soak up water nutrients.

Follow these two simple steps provided below to save your plants from bacteria and fungus.

  • Use 3% of hydrogen peroxide and mix it with two parts of water.
  • Carefully pour onto the roots, and the solution will kill and eradicate the bacteria caused by poor aeration.

Effective Disinfectant to Garden Tools, Pots, and Greenhouses

Garden spade and fork in a garden.

Hydrogen peroxide is a great solution to disinfect not only the inside of your home but to your garden tools as well.

Aside from being known in fighting off bacteria and fungus among your plant, it is also efficient in sterilizing your garden tools.

Infected garden tools may cause pathogens to spread in all of your plants and may turn your garden into a disaster.

To ensure your plants and garden tools are safe from the infestation of fungus and microorganisms, disinfecting your garden tools frequently is essential.

Here’s how to disinfect your garden tools:

  • Wash the tools thoroughly and ensure to remove dirt and debris.
  • Fill the bucket with a gallon of water mixed with 2 cups of hydrogen peroxide.
  • Dip the metal parts of your garden tools into the solution, but avoid exposing the wooden or plastic part of the tools, as it will damage them in the long run.
  • Dry your tools thoroughly after cleaning and disinfecting, and oil them afterwards so they won’t rust.

As for greenhouses, potting benches, and surfaces, spray them with the solution. Wipe with a clean cloth and dry thoroughly.


Disease-Free Potting  Mix

Disease-free potting mix after hydrogen peroxide soil treatment.

Organic medium such as compost mix, either solid or liquid, is designed to help the plants grow healthy. While this medium is packed with nutrients, using them will run a possibility of introducing the risk of bacteria and fungus into your garden.

Disinfecting your growing medium with the use of hydrogen peroxide will ensure your garden is free from bacteria and diseases. Do this by sprinkling hydrogen peroxide into your organic potting mix.

Let it settle in a week by watering the soil 2 to 3 times, and your disinfected potting mix is now safe to toss into your garden or containers.


Sanitize and Accelerate Seed Germination

Seeds soaking in hydrogen peroxide solution germinates fast.

Do you know that soaking your seeds in hydrogen peroxide helps them germinate faster?

It is necessary to thoroughly sanitize germinating trays with a hydrogen peroxide solution to avoid contamination diseases like E. coli, salmonella, and others.

Aside from fighting off bacteria that may harm your seeds, it also helps the seed to germinate fast. Unlike other disinfectants, hydrogen peroxide eradicates all pathogens without damaging the seeds itself.

To help the seeds germinate faster, take a teaspoon of 3% hydrogen peroxide and mix with 1 cup of water for the seeds to soak in for about 5 minutes. Wash off the chemical thoroughly with running water then begin the usual plant germinating process growers do. A lower concentration solution will do but takes the soaking process a little much longer.


Health Booster

Basil plant sprayed with diluted hydrogen peroxide.

If your plants look limp and lifeless, you can boost them with a dose of hydrogen peroxide. Aside from preventing fungal growths and helping faster seed germination, it also helps plants at any stage in their growth.

As we already know, watering a solution with hydrogen peroxide into the soil promotes soil aeration and helps roots absorb more nutrients. It will also aid drooping branches back into health.

To do this, take two teaspoons of 3% hydrogen peroxide and mix in a gallon of water and then water your plants with an interval of every other watering.


Combat Fungal Infection

Fungal diseases on tomatoes.

Hydrogen peroxide is known as an excellent way in fighting off fungal infection and eradicating plant diseases.

This mild chemical mixture is good at busting bacteria while being gentle with your plants.

Using this solution will help you worry less about powdery mildew, molds, and infestation of insects.


Repel Insects Away

Bugs and insects on vegetable leaves.

While other insects like honey bees are helpful in your garden, many insects harm and damage your plants. Repelling them in the first place can help you control such bugs and insects.

Spraying the leaves of your plants with 1% hydrogen peroxide can keep them away. This much cheaper solution to repel insects is environmentally friendly, making your plants safe for easy consumption.


Efficient Weed Control

While a mild mixture kills off bacteria and fungus in your plants, a stronger infusion is also efficient for weed control. A 10% solution can kill weeds when sprayed directly.

Mix a stronger mixture in a bucket and pour it on the weeds. Be careful not to splatter the solution into the flowers and your plants in the garden. It will kill them too.


Water Treatment

Medium size metal water tank along with two small sizes metal watering cans.

When you prefer to collect water in a tank or water butt to cut water costs in your summer garden, you can use them safely by treating them with a hydrogen peroxide solution. 

It will kill all pathogens and other harmful chemicals in your accumulated water. Also, getting rid of chlorine in your tap water is one of its great uses too. 

Just mix a small amount into your watering can or into your tank when you prefer to use a garden hose for watering. This solution will help fill your tank with oxygen while purifying the water to help plants absorb nutrients faster.


Caution In Using Hydrogen Peroxide

Warning sign used to warn people

Do Not Boil The Chemical

While this compound is beneficial to your garden, it is essential to know how to handle it carefully.

Hydrogen peroxide is a very volatile compound that will explode when exposed to heat, so don’t try to boil the chemical.

Store It Properly

Securely store the chemical in a cool dark place, away from direct sunlight and other heat-triggering sources. Also, ensure to keep it in a tamper-proof container.

Wear Rubber Gloves

When you mix a higher concentration of hydrogen peroxide as a weed control solution, always wear rubber gloves before diluting with water as ordinary gloves are not waterproof.

Keep Out Of Children’s Reach

While hydrogen peroxide can treat small wounds and cuts, it should never be ingested. It will cause too much oxygen in your blood, which can lead to many health issues. 

So, ensure to store the chemical away from your pets and children’s reach. Also, use it sparingly when you do use it to treat your cuts and wounds. Hydrogen peroxide can reduce the number of cells you have when absorbed through the skin.


Final Thoughts On Using Hydrogen Peroxide For Your Plants

As you can see, hydrogen peroxide significantly improves plant growth by enriching the soil with oxygen. It offers countless uses for your garden, along with preventing pathogens and other fungal diseases in your plants.

Have you tried watering your plants with hydrogen peroxide? You can share your experience in the comment section below. We will be happy to hear them!

About Benita Abucejo

Hi there! My name is Benita Abucejo. What can I say? I truly love spending my days in the outdoors, specifically in the garden. Gardening has always been a strong passion of mine since I was a little girl. It has brought me so much joy and happiness that it is definitely safe to say that I will be a gardener for life. For a period of time, I was able to work with people who are into home gardening and I found it to be quite beneficial to my physical health, as well as my mental well-being. Here at Seasonal Preferences, I am going to share with you my experience and ideas so that you can fulfill yourself with the same satisfaction and happiness. Of course, if you have ideas, I would love to hear those as well! Being creative in the garden can really be quite fascinating so let's share our experiences and be the best gardeners we can be. With that being said, thank you for dropping by and please leave me a comment on one of my posts if you would like to get in touch!

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