Marijuana breeding is greatly simplified with autoflowering cannabis seeds. Autoflowering cannabis seeds can easily be planted outside, even in cool regions, while still delivering great results. In good climatic conditions, very good results can be achieved in both indoor and outdoor areas after just a few weeks. Even in regions with short summers, autoflowering cannabis seeds lead to good crops outdoors without difficulty. The hybrid species Cannabis ruderalis is native to regions with short summers and a harsher climate. Autoflowering cannabis seeds are produced in combination with classic Cannabis indica and Cannabis sativa varieties from southern regions. If these marijuana seeds are cultivated indoors, the twelve-hour dark phase can be dispensed with. When cultivating autoflowering cannabis seeds, one should avoid pruning the plant, as is done with normal marijuana plants, since the life cycle of these plants is too short to continue developing after the top has been cut away. When cultivated outdoors, autoflowering varieties with a life cycle of 75 to 80 days should be planted in early July at the latest (in the southern hemisphere, in early January at the latest).