The Observation after studying the pH of the soil, we see that: The universal pH indicator, when added to the test tube containing the soil solution, we see the color of the solution change, and these changes in the color can be tracked using the pH color chart. The soil collected from the Roadside has a pH level of 7and the soil collected from the garden has a pH level of 6. Most of the crops are known to grow between pH levels of 6.0 and 7.0.