Fire O.G. (Indica): Regarded by many to be the most powerful O.G. Kush strain on the planet, Fire O.G. isn’t suggested for inexperienced users. A cross between the original O.G. Kush and San Fernando Valley O.G. Kush, Fire O.G.’s taste has a robust earthiness with a hint of citrus. Most feel an instant cerebral stimulation that jumpstarts creative juices, followed by a very potent and relaxing body high.