Blue Grass
a grass cultivated for pasturage in northern and central Kentucky, deriving its name from the underlying strata of blue limestone which gives it a luxuriant growth, and distinguished from other species by flat panicles, smooth culms and sheaths, and short, blunt ligules. The blue grass region occupies about 10,000 square miles in northern Kentucky. The soil is very rich, and agriculture, especially the raising of tobacco and hemp, is carried on with great success. The pastures support the horses and live stock for which Kentucky is famous.