How to Raise Potted Plant Soil pH

Soil pH is an important factor in the growth of potted plants. Since most potted plants grow in a confined space, it's essential to maintain the right balance of nutrients in the soil to keep them healthy. Understanding how to raise your potted plant's soil pH is crucial to keep them thriving.

Testing Soil pH

The first step in raising your potted plant soil pH is to test the soil with a pH meter. You can purchase a pH meter from a garden store or online. Insert the probe into the soil to get an accurate reading of the soil pH. A pH reading of 7 is neutral, while a reading lower than 7 is acidic, and higher than 7 is alkaline.

Increase Soil pH with Lime

One effective way to raise the soil pH is by adding lime to the soil. There are two types of lime for garden use: calcitic and dolomitic. Calcitic lime is best for gardens with acidic soil, while dolomitic lime is ideal for those with magnesium-deficient soil.

Add a layer of lime on top of the soil in the pot and mix it into the soil. The amount of lime you need to add depends on the pH level of the soil and the size of the pot. Start with one teaspoon per gallon of soil and mix it well. Test the soil after a week or so and add more lime if needed.

Amend Soil with Wood Ash

Another option to raise the soil pH is by using wood ash. Wood ash has a high concentration of calcium, potassium, and magnesium, which can help balance soil pH. Spread a thin layer of wood ash on top of the soil in the pot and mix it in. Be careful not to add too much ash, as it can harm your plants.

Use Crushed Shells or Oyster Shells

Crushed seashells or oyster shells are a natural alkaline substance that can also raise soil pH in potted plants. They are high in calcium carbonate, which can neutralize acidic soil. Mix crushed shells into the soil or add them on top of the soil in the pot. As they decompose, they'll leach their nutrients into the soil, raising the pH level.

Conclusion

A healthy growing environment is essential for potted plants, and soil pH is a crucial factor to consider. By using lime, wood ash, or crushed shells, you can raise soil pH and ensure optimal growth for your potted plants. Remember to regularly test the soil pH and adjust the levels as needed to help your plants thrive.