How to Balance pH for White Campion

To maintain the ideal pH range of 6.1 to 6.5 for growing healthy White Campion (Silene latifolia) plants, you’ll need to test your soil and make adjustments as necessary. This comprehensive guide will walk you through the process step-by-step, including the use of chemical amendments and home remedies, as well as providing tips on temperature, watering, and maintenance.

Soil Testing

The first step in balancing the pH for your White Campion is to test the current pH level of your soil. You can use a home testing kit or send a sample to your local extension service. This will give you a baseline understanding of your soil’s pH, which you can then work to adjust as needed.

Amending the Soil

white campionImage source: Pixabay

If your soil pH is too alkaline, you’ll need to add acidic amendments to lower it to the ideal range of 6.1 to 6.5. Here are some options:

Elemental Sulfur

Elemental sulfur is a common and effective way to lower soil pH. The general recommendation is to apply 1 pound of elemental sulfur per 100 square feet for every pH unit you want to lower. For example, if your soil pH is 7.0 and you want to lower it to 6.5, you would apply 0.5 pounds of elemental sulfur per 100 square feet.

Aluminum Sulfate

Aluminum sulfate is another sulfur-containing product that can be used to lower soil pH. Follow the application rates on the product label, typically around 1 cup per 10 square feet.

Timing and Application

Apply soil amendments in the fall or early spring to give them time to work before the growing season. Mix the amendments into the top 6 inches of soil.

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Monitoring and Maintenance

After amending the soil, retest the pH every few months to ensure it’s staying within the desired range of 6.1 to 6.5. To maintain the correct pH, use a balanced fertilizer and avoid adding lime or wood ashes, which can raise the pH.

Home Remedies

white campion 2Image source: Pixabay

If you prefer more natural solutions, you can try using coffee grounds or vinegar to balance the pH for your White Campion plants.

Coffee Grounds

Coffee grounds can slowly lower soil pH as they decompose, but they should be used sparingly as they can also add unnecessary nitrogen to the soil. Aim for no more than 1 cup of coffee grounds per 10 square feet of soil.


Vinegar can be used to lower soil pH, but it should be diluted with water and used carefully, as it can harm plants if used in too high of a concentration. Start with a solution of 1 part vinegar to 10 parts water and apply it to the soil.

Temperature and Watering

White Campions prefer full sun but can tolerate partial shade. They are hardy in USDA zones 3-9, so they can tolerate a wide range of temperatures. However, they prefer cooler temperatures and may struggle in hot, dry conditions. Water your White Campion plants regularly, keeping the soil moist but not waterlogged.

By following these steps, you can successfully balance the pH for your White Campion plants and create the ideal growing conditions for these beautiful flowers.


  1. Plant pH Preference List
  2. Native Plants for Georgia: Part III – Wildflowers
  3. Soil pH and Plant Growth
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