It is true that evergreens tend to make the soil beneath them more acidic. This could contribute to your grass turning brown over a period of time. There are other factors to consider, but we won’t rule out this possibility. Extremely acidic soil would be a poor growing environment for a lawn.

What happens if soil is too acidic?

If soil is too acidic, it creates deficiencies in the available supply of nitrogen, phosphorus, potassium and magnesium. … Aluminum, which plants do not need but is present in soil, becomes soluble in acidic soils and absorbed by plants, resulting in toxicity.

How do I reduce the acidity in my lawn?

If the pH is too high, your grass cannot properly absorb nutrients. Ideal pH should be between 6.5-7.0, slightly acidic. Generally, lime is added to raise the pH and sulfur is added to lower the pH, and adding compost can naturally correct your pH.