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How to change your soils pH level

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The pH of the soil is the value given to how acidic or alkaline your soil is. If you can remember back to high school science, pH is on a scale of 0-14. 0 = most acidic, 7 = neutral, and 14 = most alkaline.

Your soil’s pH level can have a massive impact on plant growth. Some plants will thrive in acidic soils, while some will only grow in alkaline soils.

pH level affects some plants more than others, hydrangeas being a notable lover of acidic soils.

Grow Bucket Fulls of Blueberries
Blueberries require acidic soil to grow well

If you have some plants that just won’t grow in a specific area of the garden, then maybe it is time to investigate the pH level of your soil.

The best way to check the pH of your soil is with a soil testing kit.

Find Out Your Soils pH
Bosmere Soil pH Test Kit

Easy to use kit to test the PH of your plants


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Once you know the pH, we can begin to change it.

Make sure you know the acidity or alkalinity of your soil before taking the next steps or you may just end up making the problem worse!

Also, research what pH level you want to reach. If you are going azaleas, for example, you will want acidic soil, if you are growing many common vegetables, you will be looking for alkaline soil.

Will my garden be acidic or alkaline?

Azaleas Need Acidic Soil To Grow
Azaleas Need Acidic Soil To Grow

Without outside intervention by a determined gardener, your soil pH is determined by the type of soil you have and how it formed.

The rock type in your area of the country will have a big impact. Chalky soils, for example, will be very alkaline.

Another factor that can affect soil pH is rainfall. Heavy rains will help remove nutrients such as calcium and magnesium from the soil, making it more acidic.

If you live in an area with lots of rainfall, and if you don’t, you’re one lucky Brit, your soil will often tend to be more acidic.

How to decrease soil pH

So lets say you’ve tested your soil and now know it is too alkaline. How do you reduce the soil pH level and make it more acidic?

Aluminium sulphate and sulphur are two common choices for reducing soil pH.

Increases The Acidity of Soil
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03/01/2024 02:27 pm GMT

How to increase soil pH

The most common way of increasing the soil’s pH level is by adding lime.

This can be done in numerous different ways and there are many different products on the market to help you increase your soil pH.

Reduces The Acidity Of Soil
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03/01/2024 09:08 pm GMT

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