PH Adjustments


Why is PH so Important?
Soil pH affects the availability of nutrients to plants and the activity of soil microorganisms. That is why we provide free soil testing with every program. We even include an application of professional grade calcitic lime with both our 9 treatment programs.

What is PH?

Soil pH is a measure of the acidity or alkalinity of the soil with a scale of 0 to 14. The neutral point or balance for soil pH would be 7. As the number of the soil pH increases, this indicates an increase in soil alkalinity. As the soil pH number decreases this indicates an increase in soil acidity. The ideal pH for most grass types is 6.5 to 7.0. This would be an optimum pH but different grass types can tolerate a range of pH levels — see our grass species pH chart on the next tab. Note that some grass species such as centipede prefer a more acidic soil with pH levels around 5.0 – 5.5 considered optimal.

What if My PH Needs to be Adjusted? 

If your soil tests indicate too much acidity, then we would need to add lime to increase the alkalinity to reach your target pH. Please note that lime can take up to 2 – 3 months (or longer) to react with soil. The soil pH will be tested again at this point and may require that the soil is treated again. 

About Lime:
Lime is considered a natural soil amendment rather than a fertilizer and furnishes important plant nutrients such as calcium and magnesium. Lime also reduces soil toxicity while promoting the regulation of nutrients such as zinc, copper, and especially phosphorous.

Ideal = 6.5
Low = 5.6
High = 7.0

Ideal = 6.5
Low = 5.5
High = 7.0

St. Augustine
Ideal = 7
Low = 6.3
High = 7.8

Ideal = 5.5
Low = 4.3
High = 5.8