How to Lower pH in Soil with Vinegar? Step by Step Solution

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Are you thinking about growing any acid-loving sapling, such as azalea or hydrangea, in your garden? Want to know how to lower pH in Soil with vinegar? Then, you will have to lower the overall pH level of the ground and make it acidic. You need to use soil pH meter to know the pH level of your garden soil. But how are you going to do so?

Well, using vinegar would be the best way to do so. In essence, it is a potent non-alkaline liquid, which can be easily absorbed by the soil and make it acidic naturally. Additionally, you would also not have to use the inorganic products, which, in turn, can harm the quality of the earth.

So, here, we will be talking about ways to make your garden more acid-friendly with vinegar. Let’s get started.  

Why Use Vinegar in Soil?

Essentially, vinegar is the liquid and diluted form of acetic acid. Therefore, if you do add it in soil, then it will reduce the pH level naturally, without causing any harm to quality.

Furthermore, depending on how it has been manufactured, some types of vinegar also contain a decent amount of vitamins.

Therefore, with it, you can make the garden’s earth a lot healthier and wholesome for the plants. However, you can’t just use any vinegar product in this aspect.

Most products, which can be found in the supermarkets, are highly acidic. So, for keeping things organic, you should always opt for organic vinegar products.

How to Use Vinegar to Lower the pH in Soil?

The whole procedure of using vinegar to lower the pH in the garden is quite easy. However, if you do not follow the steps thoroughly, then things might get a little bit tricky. So, make sure to go through the tips, which we have provided below, thoroughly and follow them without any mistake.

Step – 1: Buy an Organic Vinegar

Before you get started with anything else, you would, first, have to buy an organic vinegar product for your purpose. But why are we asking you to do so? Well, the acidic level in an organic item would be a lot less than the chemical-based ones.

So, before buying anything, you should always check out its label first. You can find the alkaline level there. If you do see that the count there is less 2.4 pH, then you can purchase and move on with it.

Step – 2: Mix It with Water

This is probably the most important step in the whole procedure. Firstly, you will have to start it by taking a substantial amount of water. If you have a smaller garden, then taking 4 liters of liquid would suffice for you. However, you may need more for the bigger backyards.

Anyways, once you are done with it, you can, then, measure out the vinegar. If you have taken four liters of water, then we would suggest you combine around 240ml of vinegar in it. Make sure not to increase the quantity anymore. It might amplify the acid level in your soil even more.

Step – 3: Stir It Up

After you have mixed up the vinegar, you will, then, have to stir it to blend everything up in a proper manner. Nonetheless, many people tend to use their bare hands to stir the mixture. But it is wrong.

Exposing your hands to raw vinegar might affect the skin of your hands. So, it would help if you chose a long and sturdy utensil for this purpose.

Step – 4: Pour It

Now, you are ready to pour the mixture on the soil or your plants. Nonetheless, we would recommend you not to spray it directly on the saplings. It may affect their leaves due to its acidity.

However, there is one thing that you should maintain here. You will have to use a sprayer to pour the liquid on the soil. It may take a little bit of time, but it is, indeed, the safest way to do so.

How to Lower pH in Soil Fast?

Here are some other methods that can help you to make the soil more acidic quickly –

Reducing Soil pH With Household Items

If you are thinking about reducing the pH of the soil with household items, then your best bet in this respect would be baking soda and vinegar. Now, we have already talked about the latter before. So, let’s know a little bit about the former.

If you are using the baking soda, then make sure to mix it up a small amount of water along with a little bit of vinegar. For example, you can pour ½ cup of vinegar and baking soda in two liters of water.

Once you have mixed it properly, you can, then, spray the mixture on your garden to increase its acidic proportionate.

Lowering soil pH with sulfur

Besides the homemade solutions, you can also use elemental sulfur for this purpose. These components are quite strong and can cater to your whole garden quite easily. For instance, you would need around 0.3 lbs of sulfur to acidify the soil.

Moreover, unlike the previously-mentioned products, sulfur is also quite inexpensive. So, without spending much of your cash on the process, you can reduce your garden’s pH level of 8.0 to 6.5.

However, there’s a hitch. Sulfur usually takes a lot of time to kick in properly. Therefore, it may take around one to three months to increase the acidic level of your garden in a proper manner.

Using Coffee to lower soil pH

Whether you do believe it or not, but caffeine does contain a few different types of organic-acidic components. However, they actually healthy both the human body as well as the plants. In addition, as they are pretty much water-soluble.

So, if you want to, then you can take the coffee beans and try to dilute it in a small amount of water. It may take a little bit of time, to say the least. However, as caffeine has a decent pH level, it will surely help you with your purpose.

Nevertheless, the caffeine mixture might take a little bit of time to start working. So, if you want to make everything quicker, then you can also add a small quantity of vinegar in the mixture.

Sulfur-coated Urea to Lower Soil pH

Using sulfur-coated urea is yet another excellent way to reduce the pH level of your garden. Frankly, it does take quite a bit of time to start working, but when it does, it makes everything look efficient and effective.

As you can understand from the name, urea products generally come with subtle sulfur-coating. So, when you spread it on the ground, it starts emanating nitrogen through it. It, in turn, starts reducing the alkalinity of the ground gradually.

Like the second option, this one, too, is quite affordable and environment-friendly. The issue with it is that it tends to take a lot of time.


So, these are a few of the ways that can help you to lower the level of alkaline of your garden precisely. Honestly, using a mixture of vinegar and water seems to be the ideal idea in this aspect.

However, if you are looking for a more affordable approach, then using sulfur should be the right option for you. Hence, before you opt for any one of the methods, make sure to evaluate them thoroughly and, then, make your decision. Hopefully, it will be beneficial for your purpose.

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