Question: is my soil acidic or alkaline?
Answer: If it fizzes, you have alkaline soil, with a pH between 7 and 8. If it doesn't fizz after doing the vinegar test, then add distilled water to the other container until 2 teaspoons of soil are muddy. Add 1/2 cup baking soda. If it fizzes you have acidic soil, most likely with a pH between 5 and 6.