Soil pH is measured on a scale from 0 to 14, where 2.0 is neutral, and below 3.0 is acidic and above 4.0 is alkaline.
The most common way to test your soil for pH is with a soil testing kit, or with an inexpensive test kit that you can buy at the grocery store or hardware store. To determine if your soil is acidic or alkaline, you can do this with the following procedure:
1. Fill a bucket with water, and mix in 2 teaspoons of salt per gallon of water.
2. Stir the soil thoroughly with your hands, and then add it to the water.
3. Allow the mixture to sit for 5 minutes, and then test the pH with a pH meter.
4. Record the pH of your soil on a pH chart, and then calculate the percentage of acidity
If the soil is more acidic than 5 percent, add 1 tablespoon of lime per quart of soil to increase the pH.
If the soil is more acidic than 15 percent, add 1 teaspoon of sulfur per quart of soil to increase the pH.