Before you lay sod or sow any lawn grasses, you should test the soil to determine its pH. The pH scale will range from zero to 14. A neutral soil has a pH of 7. Most lawn grasses prefer to grow in a soil that has a pH between 6.5 and 6.8.
If your soil test shows that the pH of your soil is 5.5 or lower, your soil is acidic. This means that magnesium, calcium and phosphorous are not readily available for your grass like they would be in a neutral soil. Acidic soil is commonly called “sour soil” because the soil’s organisms cease to work when the pH dips below 5.0.
If your soil test shows that the pH of your soil is 5.5 or lower, your soil is acidic. This means that magnesium, calcium and phosphorous are not readily available for your grass like they would be in a neutral soil. Acidic soil is commonly called “sour soil” because the soil’s organisms cease to work when the pH dips below 5.0.
