Final answer:
Cool-season turfgrasses typically exhibit a bimodal growth pattern with two growth phases during the milder temperatures of spring and fall.
Step-by-step explanation:
Cool-season turfgrasses typically show a bimodal growth pattern, which refers to two distinct periods of growth during a year. These grasses flourish predominantly during the cooler parts of the year, specifically the spring and fall. In temperate seasonal climates, the growth of cool-season grasses occurs during times when temperatures are moderate, avoiding the extremes of summer heat and winter cold.
For example, grass growth spikes in May, a spring month, can represent the first mode, while a second growth phase may occur in the fall as temperatures begin to cool from the summer high. Lawn maintenance activities such as mowing can affect growth patterns by stabilizing flowering times. The consistent mowing of a field can lead to a steadier growth trend compared to an unmowed field, where flowering and growth may be more erratic due to natural environmental fluctuations.