Autoflowering seeds come from indica or sativa plants which were crossed with the ruderalis plant. This cannabis plant is situated in areas with short summers. Because of this, the ruderalis plant starts blooming automatically in a short period of time. (Normally within 2 or 3 weeks). The ruderalis cannabis plant is found mainly in Northern Europe, Russia and neighbouring countries such as China and Mongolia. This plant contains less THC than the indica and sativa types, which is the reason why they are crossed. The result of crossing the ruderalis plant with an indica or sativa plant is a fast blooming variant with a high THC production and good flower heads.