Easiest 10 Step Guide – How to Grow Cannabis(Marijuana)? What Is Cannabis(Marijuana)? Cannabis (/ˈkænəbɪs/) is a genus of flowering plants in the family Cannabaceae. The number of species within the genus is disputed. Three species may be recognized: Cannabis sativa, Cannabis indica, and Cannabis ruderalis; C. ruderalis may be included within C. sativa; all three may … Continue reading How to Grow Cannabis(Marijuana)?