Which grass is cool-season?

• A. Bermuda
• B. St Augustine
• C. Blue Grass
• D. Zoysia

Answer: (C)

Cool-season grasses thrive in cooler temperatures and grow most actively in spring and fall. Bluegrass is a classic cool-season turfgrass (Kentucky bluegrass), known for its dense, fine blades and good cold tolerance. These grasses stay productive when temperatures are lower and slow down or go dormant as heat arrives. The other options—Bermuda, St. Augustine, and Zoysia—are warm-season grasses that perform best in hot weather and warm climates, remaining green in heat but slowing or dormancy when temperatures drop. So, the grass that is cool-season is bluegrass.