Q. I’ve been told that as grass grows it makes the soil more acid which slows growth and can lead to disease. Is this true and what can I do about it?A. Yes, as grass grows it takes up nutrients from the soil, leading to a reduction in pH and the soil becomes more acid. Soil pH (‘per Hydrogen’) is an important chemical property, measured on a scale of 0 to 14. The ideal pH for most grass is 6.5 to 7. If you suspect acid soil (there are kits available to measure it or call an expert lawn care company) you can apply a product such as Bio-Lime which neutralizes the acid and ‘sweetens’ the soil, while healthy bacteria in the fertilizer will eat thatch and dead moss.
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