Monoecious

Monoecious cannabis plants produce both male and female reproductive structures on the same individual, rather than being strictly dioecious (separate male and female plants). This trait is relatively uncommon in cannabis breeding but occurs naturally in some landrace populations and has been selected for in specific breeding programs. Monoecious plants can self-pollinate, which simplifies seed production but requires careful management to prevent unwanted fertilization in seedless (sinsemilla) cultivation. The expression of monoecious traits is influenced by both genetics and environmental factors such as light stress, temperature, and photoperiod. Understanding monoecious expression is important for breeders working on controlled crossing projects and seed production protocols.

Breeders working in monoecious trait selection often aim to develop stable seed-producing lines and automated breeding systems. This classification is particularly relevant for regulated seed production environments where controlled pollination and genetic stability are priorities.