Blue Dragon is Blueberry X Sour Diesel. It's a hybrid that leans towards the Sativa side, is extremely clear headed, euphoric, somewhat energetic, and invites people to talk. I find for working, reading, or studying it's my ideal strain. Unlike many clearheaded & strong sativas it does not bring about anxiety or paranoia in my friends. Good stuff. Comparably, Blue Dream is slight heavier, more surreal, and dreamlike. Both are wonderful for stress, one just happens to be much lighter and more clearheaded. Peace, DigitalAlch