How to Balance pH for Orange Honeysuckle

Maintaining the optimal pH level is crucial for the healthy growth and vibrant blooms of orange honeysuckle (Lonicera sempervirens). This guide will provide you with a comprehensive understanding of the steps required to balance the pH for your orange honeysuckle plants, ensuring they thrive in your garden.

Understanding the Ideal pH Range for Orange Honeysuckle

Orange honeysuckle, also known as Trumpet honeysuckle, prefers slightly acidic to neutral soil with a pH range between 6.0 and 7.0. This pH range provides the ideal conditions for the plant to absorb essential nutrients and maintain optimal growth.

Testing the Soil pH

orange honeysuckleImage source: Pixabay

To determine the current pH level of your soil, you can use a pH soil test kit or a digital pH meter. These tools will provide you with an accurate reading of the soil’s acidity or alkalinity, allowing you to make the necessary adjustments.

Adjusting the Soil pH

Lowering the pH (Acidifying the Soil)

If your soil is too alkaline, with a pH above 7.0, you can lower the pH by adding acidifying materials such as:

  1. Sulfur: Apply powdered sulfur at a rate of 1-2 pounds per 100 square feet of soil. Mix it thoroughly into the top 6-8 inches of soil.
  2. Peat Moss: Incorporate peat moss into the soil at a rate of 2-4 inches per 100 square feet. Peat moss is naturally acidic and can help lower the pH.
  3. Compost: Adding well-decomposed compost to the soil can help lower the pH over time. Aim for a 2-4 inch layer per 100 square feet.

Raising the pH (Alkalizing the Soil)

If your soil is too acidic, with a pH below 6.0, you can increase the pH by adding lime to the soil. The amount of lime required will depend on the current pH level and the soil type. As a general guideline, you can apply:

  1. Ground Limestone: Apply ground limestone at a rate of 2-4 pounds per 100 square feet of soil. Mix it thoroughly into the top 6-8 inches of soil.
  2. Dolomitic Limestone: Dolomitic limestone can be used as an alternative to ground limestone, applying at the same rate.
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Monitoring and Maintaining the Desired pH

orange honeysuckle 2Image source: Pixabay

After applying the pH-adjusting amendments, wait for several weeks to a few months for the soil to reach the desired pH range of 6.0 to 7.0. During this time, continue to monitor the soil pH using test kits or meters.

If the pH is still not within the ideal range, you may need to reapply the amendments or adjust the quantities accordingly. It’s important to be patient and allow the soil enough time to respond to the changes.

Ongoing Maintenance

To maintain the optimal pH for your orange honeysuckle, consider the following practices:

  1. Regular Soil Testing: Conduct soil tests annually or every two years to ensure the pH remains within the ideal range.
  2. Organic Matter Addition: Incorporate organic matter, such as compost or well-rotted manure, into the soil to help maintain the desired pH level.
  3. Mulching: Apply a 2-4 inch layer of organic mulch around the base of the plant to help retain moisture and regulate soil pH.
  4. Watering: Ensure the orange honeysuckle receives consistent, well-drained watering, as excess moisture can affect the soil pH.

By following these steps, you can successfully balance the pH for your orange honeysuckle, creating the ideal growing conditions for this beautiful and fragrant plant to thrive in your garden.


  1. The Wonderful Dwarf Bush Honeysuckle (Diervilla)
  2. Trumpet Honeysuckle (Lonicera sempervirens)
  3. How to Test the pH of Soil
  4. Lonicera sempervirens Care