If the genetics of Cannabis Ruderalis are crossed with those of Cannabis Indica or Cannabis Sativa, the pollinated main strain takes on some of the positive characteristics of the pollinator plant. In this case, it is the fast life cycle and the robustness of the Ruderalis cannabis strain. The plants from autoflowering THC seeds usually grow no taller than one metre and flower independently of the light cycle. Often, growers do not have to wait 10 weeks before they can harvest the first flowers after sowing.