What is a benefit of taller turfgrass in terms of mowing height?

Choosing a taller mowing height for turfgrass is beneficial because it helps the grass develop a deeper root system, which can improve its drought tolerance. When grass is allowed to grow taller, it shades the soil better, reducing evaporation rates and improving moisture retention. Deeper roots can access water farther down in the soil profile, enabling the grass to withstand periods of limited rainfall more effectively. This support for resilience during dry conditions is particularly important in maintaining a healthy lawn, as it reduces the need for frequent irrigation and promotes overall plant health.

The other options do not accurately reflect the primary advantages of maintaining taller turfgrass. Although shorter mowing heights may sometimes correlate with increased nutrient uptake, taller grass typically leads to an overall more sustainable and resilient lawn, especially in regards to moisture and drought. Additionally, while taller grass might have benefits for pest management and growth rates, those factors are secondary to the primary advantage related to drought stress.