Sativa 70:30 ~BERRY, SPICE ~UPLIFTING, CLEAR-HEADED, LONG-LASTING ~STRESS, ANXIETY Blues, also known as Livers, is a famous hybrid strain in the U.K. Its origins are a well-kept secret, but many speculate Blues to be a unique phenotype of Sensi Seeds Skunk #1 from the 80s. Those who have chanced upon this mysterious clone-only strain describe its effects as uplifting, long-lasting, and clear-headed.