What does "cool-season" grass mean?

"Cool-season" grass refers to grass species that are optimized for growth in cooler temperatures. These grasses thrive primarily in the spring and fall when temperatures are moderate, typically between 60°F to 75°F (15°C to 24°C). During warmer summer months, their growth slows, and they may go dormant or exhibit reduced activity.

This classification is important for turf management, as it helps determine the best planting times, maintenance practices, and water requirements for optimal grass health. Understanding the characteristics of cool-season grasses allows turf managers to plan for effective landscaping and lawn care tailored to their climate.

The other options do not accurately define cool-season grasses. Grasses that thrive in hot climates represent warm-season varieties, and while some species may require higher moisture levels, this is not a defining characteristic of cool-season grasses. Similarly, while cool-season grasses may go dormant during very hot or extreme cold conditions, dormancy alone does not encapsulate their growth behavior and seasonal preferences.