Because bluegrass tends to go dormant during temperature conditions that sit on opposite sides of the spectrum, including in very hot weather as well as in colder months, Kentucky bluegrass is known to turn brown during the winter in North America. This does not mean that your turfgrass is dead—on the contrary, Kentucky bluegrass is able to withstand harsher temperatures by turning its processes and growth rate dormant until more amenable conditions return. However, Kentucky bluegrass is one of the grass types most likely to remain alive and healthy during the winter months, given that it is a cool-season turfgrass and can withstand such conditions.