There are over a hundred types of cannabis strains 1.There are over a hundred types of cannabis strains in existence today. They are classified into the following: cannabis and strains, Cannabis Sativa strains, cannabis ruderalis strains, and cannabis hybrid strains. 2. Crossbreeding of two or more cannabis strains results in cannabis hybrid strains. The resulting products have taken on the best traits of their parent strains and are usually described as better or enhanced versions of ...