Feminized thc autoflowering cannabis strains are relatively new to the grower scene. The first automatic genetics make the first appearance in the catalog of seeds banks starting from 2000 even if the first crossbreeding experiments with ruderalis varieties have already taken place since the 70s in Holland. Thc autoflowering cannabis plants flower when they reach a certain age. No matter how much light they get, these plants will automatically start flowering after a certain amount of time, which is usually 2-3 weeks. They inherited this characteristic from Cannabis ruderalis , a particular variety of cannabis which, unlike sativa and indica strains, is autoflowering by nature. All autoflowering strains contain ruderalis genetics, the essence that allows them to flower automatically.