Self Pollination

Self-pollination occurs when a cannabis plant fertilizes itself, typically through hermaphroditic flowers that produce both male and female reproductive structures. This reproductive strategy is relatively uncommon in cannabis breeding compared to cross-pollination, but it does occur naturally in stressed plants or in controlled breeding environments. Breeders occasionally document self-pollinated lineages, though the practice raises concerns about genetic bottlenecking and reduced vigor in offspring. Self-pollinated seeds are sometimes called "selfed" seeds in breeding terminology. Understanding self-pollination is important for breeders managing genetic stability and preventing unintended pollination events in cultivation facilities.

Breeders may intentionally self-pollinate selected plants to fix desirable traits or create stable homozygous lines, though this approach typically reduces genetic diversity. Accidental self-pollination from hermaphroditic plants can compromise breeding programs and requires careful facility management to prevent.