Put away the pricey plant sprays, because you can use hydrogen peroxide for plants in a myriad of ways. This common household item, which you may have sitting in your medicine cabinet or under the kitchen sink, can be used for everything from disinfecting to stimulating plant growth.
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It's one of those do-it-all ingredients that you should always have on hand&#;and that you should always turn to before buying a specialized plant product that addresses just one issue.
Here are five ways to use hydrogen peroxide for plants that you can start using on your houseplants and outdoor garden today.
Hydrogen peroxide is a chemical compound that is used as an antiseptic and bleach. Around the house, it can be used for everything from eliminating odors to cleaning bathrooms to brightening laundry. Generally, you'll use a 3% concentration in the garden and home--and dilute it with water as needed.
Benefits of Using Hydrogen Peroxide for Plants
Some gardeners swear by this household basic's properties and benefits.
How to Use Hydrogen Peroxide to Disinfect Garden Tools
You may not often think about disinfecting your garden tools, but it's an essential step whenever you're dealing with plants that could have bacteria or fungus lurking. You don't want to contaminate other plants, and garden tools should be disinfected any time they come into contact with a diseased plant.
You can also use hydrogen peroxide to disinfect the water of a hydroponic plant. Add two and a half teaspoons of hydrogen peroxide to one liter of water. This will help keep the plant's environment healthy.
How to Use Hydrogen Peroxide to Boost Plant Growth
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Because it oxygenates the soil, hydrogen peroxide may help aerate the soil, providing better access to oxygen for plant roots. It also helps disinfect the growing material to stave off bacteria and fungus.
How to Use Hydrogen Peroxide to Combat Root Rot
Hydrogen peroxide's oxygenating properties are exactly what a plant needs when it's suffering from root rot. While it can't bring back a plant that's completely gone, it can make an impact when you intervene early.
How to Use Hydrogen Peroxide to Repel Pests
Even if fungal infections or pests have already started to attack your plants, it's not too late to try hydrogen peroxide. Because of its disinfecting properties, hydrogen peroxide can help fight fungal infections, including powdery mildew, and repel insects and pests. It can also kill eggs and larvae.
How to Use Hydrogen Peroxide to Kill Weeds
Used wisely, hydrogen peroxide can be used to kill weeds in your garden. The trick is keeping it away from areas where your own carefully sowed plants are growing.
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FAQ
What strength of hydrogen peroxide should I use?
For most household and garden applications, look for a 3% hydrogen peroxide, then dilute it in water as necessary.
Are there plants that react poorly to hydrogen peroxide?
All plants can generally tolerate hydrogen peroxide, however it must be diluted. If it is left at full strength, it can bleach or damage leaves.
How To Use Hydrogen Peroxide In The Garden
You may have heard that hydrogen peroxide for plants in your garden is helpful. It isn&#;t a secret that hydrogen peroxide has a plethora of uses around the home from cleaning the toilet to disinfecting sponges.
So many in fact that one begins to doubt the veracity of these claims. So is it true? Can you use hydrogen peroxide on plants? Will hydrogen peroxide kill plants? There&#;s a lot to unpack here so keep reading to find out if hydrogen peroxide for the garden is beneficial or detrimental.
What is Hydrogen Peroxide?
Hydrogen peroxide, often shortened to simply &#;peroxide&#; is a disinfectant, bleaching agent and oxidizer that is a pale blue liquid in its pure form and slightly thicker than water. It is diluted for sale to consumers and slightly less so for industrial use.
Its first commercial use was to bleach hats in the &#;s. Since then it has moved into the realm of everything from cleaning agents to tooth whiteners to rocket propellants.
In , Dro Benjamin Ward Richardson declared that hydrogen peroxide could be used to eliminate odor, effectively labeling it a disinfectant. For years it has been marketed as a go-to disinfectant for minor wounds. That idea is no longer popular since peroxide has been shown to do more harm than good.
Hydrogen Peroxide Hacks: Fact or Fiction?
Whether hydrogen peroxide is useful and safe for plant life depends on the claim. For instance, there is a claim that hydrogen peroxide can cure plant diseases, however, that may be too broad. Here are two hacks to consider if you&#;re thinking about using peroxide in the garden.
1. Peroxide does sterilize surfaces and has been shown to reduce bacteria as well as some fungi. However, hydrogen peroxide works by immediately interacting with other compounds so quickly that it&#;s impossible for the disinfectant to move through plant tissues where a pathogen resides. So, this particular hack would be false. In fact, excess use of hydrogen peroxide on a plant may actually make it worse by drying the surface of the plant and killing off its beneficial microbes.
2. Conversely, there is a claim that hydrogen peroxide can speed germination. True or false? It&#;s actually true, although it&#;s not always necessary. Hydrogen peroxide is said to increase oxygen, which then facilitates sprouting. Instructions say the seed should be soaked in a 3% or less solution for 30 minutes. But, at least one study has been done to prove or disprove this claim and there were several findings. It does not work on every type of seed, and the concentration of peroxide is key; too much, and the seed becomes unviable.
Seeds produce peroxide on their own so there isn&#;t a need to provide it. How, why, and on what species it works still remain to be studied. So, while it does work sometimes, there are too many variables and really no need.
Is Hydrogen Peroxide Safe for Plants?
The first hydrogen peroxide pesticide for use as a disinfectant on plants including fruits and vegetables crops was registered in and the EPA approved the registry. By September , six pesticide products containing hydrogen peroxide were available for use.
The approval was based on assessing risks to the environment and to humans. It was decided the risk was nominal, and the only recommendations were to tell users not to spray around active bee populations and to use personal protective equipment (PPE) when handling the product.
With all that in mind, the EPA says that hydrogen peroxide in low doses is indeed safe for plants. The caveat is of course, in the concentration. Too much can damage plants. Also, many of the hacks flying around are not necessary and there have been no studies to support or refute their veracity.
How to Use Hydrogen Peroxide in the Garden
There are so many recommended ways to use hydrogen peroxide in the garden. Some of the claims are that it aerates the garden, can be used as a fertilizer, cures root rot and fungal diseases, disinfects soil, disinfects greenhouse and garden equipment, encourages root growth, kills weeds, repels insects, sanitizes seeds and speeds germination, and treats water. Let&#;s explore these uses:
1. Some of these are definitely true. Hydrogen peroxide does sanitize garden tools and greenhouse equipment. However, commercial greenhouses don&#;t use it. Instead, they use hydrogen peroxide mixed with peroxyacetic acid because it works better. At home, many gardeners use rubbing alcohol to kill any pathogens on tools. And then, some are resoundingly false.
2. Peroxide removes harmful chemicals or pesticides found in tap water, so irrigation water should be treated prior to use. Hopefully, there are no pesticides in the tap&#;s drinking water.
There is likely chlorine in your drinking water. Hydrogen peroxide reacts with chlorine in water if the pH is above 7. This reaction becomes hydrochloric acid; corrosive to the eyes, skin and mucous membranes and presumably, not so great for plant tissue. At any rate, the amount of chlorine in your drinking water is negligible and not harmful to plants, so don&#;t add hydrogen peroxide. You don&#;t need to.
At the end of the day, the use of hydrogen peroxide has not been extensively studied and, in fact, in some cases, it hasn&#;t been looked into at all. In all of the above claims there is either no reason to add hydrogen peroxide and/or not enough evidence of its benefit or detriment to plants.
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