Flo was created by breeder DJ Short in the 1990s when he crossed a hybrid of Highland Thai with Purple Thai (a cross of Chocolate Thai with Oaxacan Gold,) with an Afghani landrace strain. There are two main Flo phenotypes, one with light-green coloring, and the other selected for its blue pigmentation. Consumers savor Flo for its menthol and hash flavor, that stems from its high levels of linalool and alpha-pinene.