Perpetual Ghost is one of the most intense sativa strains. Perpetual Ghost is mainly sativa (80:20 sativa/indica ratio), so if you are a novice smoker take care with this wicked strain. Heavy smoking of Perpetual Ghost can lead to an almost psychedelic feel. The patients who tend to opt for Perpetual Ghost are those who suffer from depression or those who are looking for an overall great time. If taken in small doses, Perpetual Ghost can easily send you into laughing fits and stimulate your creative mind.