12 12 Transition

The 12/12 transition refers to a photoperiod lighting schedule commonly used in controlled breeding environments, where plants receive 12 hours of light and 12 hours of darkness daily. This schedule is frequently employed to trigger flowering in photoperiod-sensitive cannabis genetics, making it a standard protocol in many breeding operations and seed production facilities. Breeders working with photoperiod cultivars use 12/12 cycles to reliably initiate reproductive development, which is essential for creating stable F1 hybrids and maintaining seed stocks. The schedule's consistency allows for predictable flowering timelines across multiple plant generations. Understanding 12/12 transition mechanics is foundational knowledge for anyone studying cannabis genetics and breeding methodology.

Breeders rely on precise 12/12 photoperiod timing to synchronize flowering across diverse genetic backgrounds, enabling controlled pollination and seed production. This protocol is critical for documenting trait expression and maintaining accurate generational records in formal breeding programs.