Coca-Cola Formula For Greener Lawn

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I know that any cola product works great for cleaning different things. However, there is this formula on the internet about other uses for Coke. Does it really work or is it neutral or harmful? Thanks

29. Create a greener lawn:

Want a golf-course worthy lawn? Mix a can of Coke with a can of cheap beer, a half-cup of household ammonia, a half-cup cup of mouthwash and a half-cup of dishwashing soap. Pour the solution into a 10-gallon sprayer container for your hose. Coat the lawn with the mixture a few times a week,

Rafael Flores Asked by Rafael Flores 2 weeks, 4 hours ago
Gardenality Stem · Zone 9B · 25° to 30° F

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Answer #1 · Nikki Sawyer's Answer · Thank you for your question Rachel. There is evidence that carbonated water can cause plants to grow faster than when given regular tap water (this was an actual study conducted by researchers at the University of Colorado Boulder in 2002). A carbonated drink is full of carbon dioxide (CO2) bubbles. Plants thrive on CO2, because it is the building block they use to make all of their organic molecules. Carbonated water also contains many other nutrients that plants need - such as potassium, carbon, hydrogen, oxygen, phosphorus, sulfur, and sodium.

However - the high sugar content of regular carbonated sodas (like Coke) - can be detrimental to the plants. A high sugar content (just like a high salt content) can cause the plant's roots to be unable to absorb the nutrients and water they need because it disrupts the osmotic balance. So, just like you wouldn't water plants with salt water... it is not a good idea to water plants with a heavily sugared solution. There may be an initial surge in growth, but the high sugar content will eventually disrupt the plants' transport mechanisms and may cause root rot.

So our solution would be to substitute plant carbonated water (like club soda for example) for the Coke when following these types of recipes. In fact, the researchers who first discovered the benefits of carbonated water on plants used Club Soda for their experiments.

I hope that answers your question, and thanks for visiting Gardenality!)

Nikki Sawyer Answered by Nikki Sawyer 1 week, 3 days ago
Gardenality Seed · Zone 8A · 10° to 15° F

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Rafael Flores

Rafael Flores · Gardenality Stem · Zone 9B · 25° to 30° F
Thank you for a very informative answer. How about the other ingredients though? Won't they neutralize the high sugar content or will they also hurt the grass?

1 week, 2 days ago ·
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Answer #2 · Nikki Sawyer's Answer · I'm sorry for not addressing the other ingredients in my earlier answer... I thought your question was only concerned with the Coke.

Beer is also carbonated, so again it is the carbonation that is providing any benefit to the plant. Beer also can contain a lot of sugar in the form of carbohydrates, so I would substitute club soda for both the beer and the coke. Most beers also contain alcohol, which is in fact detrimental to living things (scientists like myself use alcohol to kill microorganisms in the lab). In fact, some researchers at Washington State University set up an experiment using beer as lawn fertilizer. The results indicated that the beer (even alcohol-free beer) was bad for plant growth.

A lot of people think that spraying household ammonia on plants gives them a good source of the nitrogen they need for making their organic molecules. While it's true that plants crave nitrogen, it's my understanding that using household ammonia for this purpose is neither efficient nor cost-effective. First, the nitrogen in ammonia is not in a form that the plants can readily use. Second, the concentration of nitrogen in ammonia is not high enough to really provide benefit for a whole lawn (especially considering that a good bit of the liquid ammonia will evaporate before the grass even gets a chance to use it). You would have to use so much ammonia that it no longer makes sense... a good nitrogen-providing lawn fertilizer would do the job cheaper and better.

The mouthwash and dishwashing soap are both ingredients that help with insect and mildew control. Diluted dishwashing soap can help to kill unwanted insects. The soap can wash off the waxy cuticle on the bodies of soft-bodies insects (like aphids), killing them. But it can also remove the protective waxy coating on the plant's leaves, so it should be used with care. I have occasionally used a soap solution sprayed directly on an aphid infestation of some container plants, but I'd be wary about using on the entire lawn. Mouthwash can help to control powdery mildew and black spot, but a more spot-based approach is likely both cheaper and more efficient than spraying a mouthwash solution over the entire lawn.

Here is another post about the same recipe you shared... written by the Colorado State University Extension... so you don't have to take my word for it:

Nikki Sawyer Answered by Nikki Sawyer 1 week, 1 day ago
Gardenality Seed · Zone 8A · 10° to 15° F

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