All cool-season turfgrasses show the same degree of tolerance to environmental stresses such as heat and drought.

All cool-season turfgrasses show the same degree of tolerance to environmental stresses such as heat and drought.

• A. True
• B. False
• C. Not sure
• D. Not applicable

Answer: (B)

Not all cool-season turfgrasses respond the same to heat and drought. Differences in root depth, leaf traits, and water-use efficiency mean some cool-season grasses handle hot, dry conditions better than others. For example, tall fescue often survives heat and drought better than Kentucky bluegrass due to its deeper rooting, while fine fescues can be quite drought-tolerant but vary in wear and shade tolerance. Perennial ryegrass is usually intermediate in tolerance. Because these species have different physiological traits, the idea that every cool-season turfgrass has the same stress tolerance isn’t accurate.

Not all cool-season turfgrasses respond the same to heat and drought. Differences in root depth, leaf traits, and water-use efficiency mean some cool-season grasses handle hot, dry conditions better than others. For example, tall fescue often survives heat and drought better than Kentucky bluegrass due to its deeper rooting, while fine fescues can be quite drought-tolerant but vary in wear and shade tolerance. Perennial ryegrass is usually intermediate in tolerance. Because these species have different physiological traits, the idea that every cool-season turfgrass has the same stress tolerance isn’t accurate.