How to Balance the pH for Wild Geraniums

Maintaining the proper soil pH is crucial for the healthy growth and vibrant blooms of wild geraniums. These versatile plants thrive in slightly acidic to neutral soil conditions, with a pH range between 6.0 and 7.0. In this comprehensive guide, we’ll explore the step-by-step process to balance the pH for your wild geraniums, ensuring they reach their full potential.

Soil Testing: The First Step

Before making any adjustments to the soil, it’s essential to test the pH level. You can purchase a soil testing kit or have your local extension office analyze a soil sample. This crucial step will provide you with the necessary information to determine the appropriate pH-balancing measures.

Adjusting the Soil pH

wild geraniumImage source: Pixabay

Lowering the pH (Acidic Soil)

If your soil test reveals a pH that is too high (alkaline), you’ll need to lower it to create the ideal conditions for your wild geraniums. To do this, you can add elemental sulfur or a sulfur-containing fertilizer to the soil. The recommended application rate is 1 to 2 pounds per 100 square feet, and it’s best to apply this in the fall or early spring.

Raising the pH (Alkaline Soil)

If your soil test indicates a pH that is too low (acidic), you’ll need to raise it by adding lime to the soil. The recommended application rate is 5 to 10 pounds per 100 square feet, and it’s also best to apply this in the fall or early spring.

Amending the Soil

Maintaining a balanced pH is not just about adding amendments; it’s also about improving the overall soil structure and nutrient availability. Incorporate organic matter, such as compost or well-rotted manure, into the soil. This will help improve drainage, aeration, and nutrient retention, creating an optimal growing environment for your wild geraniums.

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Monitoring the pH

wild geranium 2Image source: Pixabay

After making any pH adjustments, it’s crucial to monitor the soil regularly. Retest the pH every 6 to 12 months, or as needed, to ensure the soil remains within the ideal range for your wild geraniums. This will allow you to make any necessary corrections and maintain the perfect growing conditions.

Choosing the Right Variety

Some varieties of wild geraniums are more tolerant of a wider range of soil pH levels than others. For example, the ‘Johnson’s Blue’ variety is known to thrive in soil with a pH ranging from 5.5 to 7.5, making it a great choice for gardeners with slightly acidic or alkaline soil.

Ideal Growing Conditions

In addition to maintaining the proper soil pH, wild geraniums also require the right growing conditions to thrive. They prefer partial shade to full sun and moist, well-drained soil. Deadheading the flowers will encourage repeat blooming, and the seeds will attract beneficial wildlife, such as mourning doves and bobwhite quail.


Balancing the pH for wild geraniums is a crucial step in ensuring their healthy growth and vibrant blooms. By following the steps outlined in this guide, you can create the ideal soil conditions for your wild geraniums to flourish. Remember to test the soil, make the necessary adjustments, and monitor the pH regularly to maintain the perfect growing environment for these beautiful and versatile plants.


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