I recently received a 50 lb bag of Scott's Professional turf seed. It is a variety of all Bluegrass. I made mention to a friend who is a turf science major that I wanted to buy Fescue and mix it. He said that I should not do that, but I never got an answer why. I would like more fescue in my yard because it lays down nicer and grows in faster. Anyone have any idea why I should not mix them? Thanks in advance.