The pH of the soil impacts the plant’s ability to absorb nutrients. Turf Type Tall Fescue grows best in a pH range between 6.0 and 7.0. However, we recommend narrowing that down to between 6.2 and 6.8. But other grass types require a different pH to thrive. Centipede grass, for example, does best in more acidic soil in a range between 5.0 and 5.5. Bermuda grass on the other hand is best grown in a wider pH range between 6.5 and 8.0. Perennial Rye grass does best in a pH range between 5.75 and 7.5.