Bluegrass is the name of a large number of species (kinds) of grasses that grow in cool regions of the world. Bluegrasses have flat or folded blades with tips shaped like the bow of a boat. The most important type of bluegrass in the United States is Kentucky bluegrass, known as smooth meadow grass in many other countries. It is a perennial, which means it lives through the winter and does not need to be replanted each year. Kentucky bluegrass can reach 24 inches (61 centimeters) high. It grows best in cool weather and in well-drained soil that is not too acidic. Hot, dry periods make Kentucky bluegrass dormant (inactive) and cause it to turn brown if enough water is not supplied.
People have developed more than 200 varieties of Kentucky bluegrass. It is the most popular grass for lawns and golf courses in the northern United States. It forms a thick sod that is helpful in preventing soil loss. Farmers often use Kentucky bluegrass in pastures. It is nourishing for animals and can withstand frequent grazing and trampling by cattle, horses, and sheep.
Early North American settlers brought Kentucky bluegrass from Europe and Asia. The grass got its name in the mid-1800’s from the numerous bluegrass pastures found in Kentucky.