how to test soil for vegetable garden
1 Follow the instructions listed on your soil test kit or send dry sample to the County Extension. 2  Add amendments as prescribed by the soil test. 3  Soil testing is the only way to know the pH of your garden soil. 4  The ideal pH for vegetable garden soils is 6-6.5. 5  To increase acidity, add sulfur. 6  To reduce acidity, add lime.