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Spicy exchange / 2023

Best soil pH for peppers (+ how to test your soil)

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What is soil pH?

Soil pH, which stands for “potential of hydrogen,” is a measurement that determines the acidity or alkalinity of the soil. It is measured on a scale ranging from 0 to 14.

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For successful pepper cultivation, it is important to provide them with soil within the range of 6.0 to 7.5 2, leaning slightly towards the acidic side.

What is the ideal pH for peppers?

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Peppers have similar soil pH needs to other nightshades, including tomatoes, eggplants, and potatoes. Brassicas like cabbage and broccoli also share a preference for slightly acidic soil.

How does this compare to other plants?

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Impact of soil pH 

The soil’s pH level significantly influences pepper plants’ growth and overall health. Maintaining the appropriate pH range is essential to ensure that peppers can effectively absorb the necessary nutrients and water for robust development.

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– The tips of the leaves start to die – Leaves begin to wilt – Blossom end rot in the fruit – Brown spots on the leaves Keep in mind the symptoms of highly alkaline soil can be similar to those of regular nutrient deficiencies.

Symptoms of soil that is too alkaline

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Symptoms of soil that is too acidic

– Slowed plant growth – Red, bronze, or purple tinting to the leaves – Discolored roots – Stunted or twisted leaves – Yellowing of leaves

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Testing the pH of your soil is essential for understanding its acidity or alkalinity levels, which directly impact the growth of your peppers. Several methods are available to test your soil’s pH, depending on the level of precision you desire.

Testing your soil pH

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pH test strips

pH test strips are an affordable way to test your soil. They take only 60 seconds to complete, and you will get a good idea of how alkaline or acidic your soil is. 

*This is an affiliate link

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A handheld soil pH meter will tell you the pH of your soil. Simply stick it 2.5 inches into your soil, and it will instantly provide a reading. Many soil meters also measure nutrients and water content. 

Soil pH meter

*This is an affiliate link

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