How to Balance pH for Shepherd’s Purse

Shepherd’s purse (Capsella bursa-pastoris) is a common winter annual garden weed in the mustard family. Balancing the pH for this plant is crucial for its optimal growth. The ideal pH range for shepherd’s purse is between 6 and 7, near neutral. In this comprehensive guide, we’ll explore the steps to balance the pH for shepherd’s purse and ensure its healthy development.

Determining the Soil pH

The first step in balancing the pH for shepherd’s purse is to determine the current pH level of your soil. You can do this by conducting a soil test, which can be easily obtained from your local lawncare specialist, garden nursery, or agricultural university. DIY soil test kits are also readily available online and in stores, but it’s essential to test several areas of your lawn to get an accurate reading.

Adjusting the Soil pH

shepherds purseImage source: Pixabay

If the soil test reveals that the pH is too low (acidic), you’ll need to raise it by spreading crushed agricultural limestone over the lawn. Dolomitic lime is a slower but healthier option for the grass roots. The recommended application rate is 50 lbs. per 1,000 sq. ft. of grass. The best time to spread the lime is in the fall, but early spring is also suitable.

If the soil pH is too high (alkaline), you can lower it by incorporating sulfur or other acidic amendments into the soil. The amount of sulfur needed will depend on the current pH level and the desired target pH. It’s essential to follow the instructions on the product label and consult with a local lawncare specialist or agricultural university for specific recommendations.

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Maintaining Soil Moisture and Nutrient Levels

In addition to balancing the pH, it’s crucial to maintain the appropriate soil moisture and nutrient levels for shepherd’s purse. The plant is relatively drought-tolerant but does require moderate levels of nutrients for optimal growth.

To maintain soil moisture, you can use organic mulch materials, which are highly effective for suppressing shepherd’s purse. The mulch will help retain moisture and prevent the tiny seedlings from drying out.

For nutrient management, you can apply a balanced, slow-release fertilizer according to the manufacturer’s instructions. Alternatively, you can incorporate organic matter, such as compost or well-rotted manure, into the soil to provide a steady supply of nutrients.

Timing and Temperature Considerations

shepherds purse 2Image source: Pixabay

The best time to balance the pH for shepherd’s purse is in the fall or early spring. This timing allows the soil amendments to have time to work and adjust the pH before the plant’s active growing season.

Regarding temperature, shepherd’s purse is a cool-season plant and thrives in temperatures between 50°F and 75°F. Avoid applying soil amendments or making significant changes to the soil during periods of extreme heat or cold, as this can stress the plant and inhibit its growth.

Home Remedies for pH Balancing

In addition to commercial soil amendments, there are some home remedies you can try to balance the pH for shepherd’s purse:

  1. Vinegar: Mix 1 part vinegar (white or apple cider) with 10 parts water and apply the solution to the soil around the plants. This can help lower the pH in acidic soils.

  2. Baking Soda: Sprinkle a thin layer of baking soda around the plants to raise the pH in acidic soils.

  3. Coffee Grounds: Incorporate used coffee grounds into the soil to increase acidity and lower the pH.

  4. Eggshells: Crush eggshells and mix them into the soil to raise the pH in acidic soils.

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When using home remedies, be sure to follow the instructions carefully and monitor the results closely. It’s also important to note that these methods may take longer to take effect compared to commercial soil amendments.


Balancing the pH for shepherd’s purse is essential for its optimal growth and development. By conducting a soil test, adjusting the pH accordingly, and maintaining appropriate soil moisture and nutrient levels, you can create the ideal growing conditions for this versatile plant. Remember to consider the timing and temperature requirements, and don’t hesitate to experiment with home remedies if desired. With the right care and attention, you can successfully cultivate a thriving population of shepherd’s purse in your garden.

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