How do I test soil pH?

You can test your soil’s pH by sending a soil sample to your state university cooperative extension office, who will send it off to a lab for a small fee, or by using an at-home testing kit.

To perform a soil pH test with the Jonathan Green Soil pH Test Kit, follow these steps:

1. Collect soil samples from your lawn

Gather small soil samples from four different sections of your lawn by using a gardening trowel to dig four to six inches deep into the lawn’s surface. Mix all four small samples together for one, cohesive sample to use for your test. Make sure to remove all debris from your sample and proceed to the next step.

2. Fill test container with soil sample

Once you have your comprehensive soil sample, remove the cap off of the color comparator and take out the capsule. Make sure the pH color chart is in place, then fill the test container with your prepared soil sample. Carefully separate the two halves of the capsule and pour the contents into the test container.

3. Add distilled water to the test container

Using the provided dropper, add distilled water to the test container. Do not use tap water for your soil pH test, as it usually contains acidic or alkaline components.

4. Shake test container and allow to settle

After adding distilled water to the test container, shake thoroughly and allow the test container to settle for one to five minutes.

5. Observe test container for results

Once the time is up, observe the test container for color changes. Compare the solution with the provided color pH chart to determine your result. Grass plants thrive in soils with a pH between 6.2 and 7.0 (slightly acidic to neutral). 

If you find your pH is too acidic, we recommend using Jonathan Green’s Mag-I-Cal Plus for Acidic & Hard Soil. If you find your soil is too alkaline, we recommend using Jonathan Green’s Mag-I-Cal Plus for Alkaline & Hard Soil. These unique soil amendment products will help rapidly adjust soil pH and loosen hard compacted soil.

Visit the How To Test Your Soil pH page for complete directions to help you get your soil within a healthy range!