How to Balance pH for Maidenhair Fern

Balancing the pH for a Maidenhair Fern is crucial for its health and growth. The pH level of the soil affects the fern’s ability to absorb nutrients. Maidenhair Ferns thrive in a slightly acidic to neutral soil pH, typically between 5.0 and 6.5. To balance the pH, you can follow these steps.

Soil Testing for Maidenhair Fern

Before adjusting the pH, it’s essential to know the current pH level of your soil. You can purchase a pH test kit or strip from a garden center or online. Follow the instructions provided with the kit to get an accurate reading.

Soil pH Test Kit

  • pH test kits typically come with color-coded strips or a digital meter.
  • Collect a soil sample from the root zone of your Maidenhair Fern.
  • Follow the instructions on the kit to test the soil sample and determine the current pH level.

Interpreting the Results

  • If the pH level is above 7.0 (alkaline), you’ll need to lower the pH.
  • If the pH level is below 5.0 (acidic), you’ll need to raise the pH.
  • Aim for a soil pH between 5.0 and 6.5 for optimal Maidenhair Fern growth.

Adjusting the Soil pH for Maidenhair Fern

maidenhair fernImage source: Pixabay

Based on the soil test results, you can amend the soil to adjust the pH level.

Lowering the pH (Acidic Soil)

If the soil pH is too high (alkaline), you can add elemental sulfur or aluminum sulfate to lower it.

Soil pH Elemental Sulfur Aluminum Sulfate
Above 7.0 1 tablespoon per gallon of soil N/A
6.5 – 7.0 N/A 1-2 teaspoons per gallon of soil
  • Mix the amendment into the top 2-3 inches of soil.
  • Water the soil thoroughly after adding the amendment.
See also  How to Balance pH for Daffodil (Narcissus): A Comprehensive Guide

Raising the pH (Acidic Soil)

If the soil pH is too low (acidic), you can add dolomitic lime to raise it.

Soil pH Dolomitic Lime
Below 5.0 1-2 tablespoons per gallon of soil
5.0 – 5.5 1 teaspoon per gallon of soil
  • Mix the lime into the top 2-3 inches of soil.
  • Water the soil thoroughly after adding the lime.

Monitoring and Maintaining pH

After amending the soil, wait for a few weeks and then re-test the pH level to ensure it’s within the desired range of 5.0 to 6.5. Repeat the amendment process if necessary.

Ongoing Maintenance

  • Test the soil pH annually or whenever you notice changes in your Maidenhair Fern’s growth or appearance.
  • Adjust the pH as needed to maintain the optimal range.
  • Provide consistent moisture, high humidity, and bright, indirect light for your Maidenhair Fern.
  • Fertilize the fern once a month during the growing season with a balanced, diluted fertilizer.

Remember, Maidenhair Ferns can survive without fertilization, but proper nutrition and pH balance can enhance their growth and overall vitality.


maidenhair fern 2Image source: Pixabay

  1. Maidenhair Fern Fertilizer
  2. Maidenhair Fern Care
  3. Growing Maidenhair Ferns
  4. Maidenhair Fern Troubleshooting
  5. Adiantum Fern Care