Short Day Triggering
Short Day Triggering refers to cannabis plants that initiate flowering in response to reduced photoperiod—typically when daylight falls below 12–14 hours. This classification encompasses most photoperiod-dependent cultivars, as opposed to autoflowering varieties that flower independent of light cycles. Breeders working with photoperiod genetics rely on short day triggering to control cultivation timing and maintain stable generational traits. Understanding this mechanism is foundational for seed selection, breeding schedules, and outdoor cultivation planning in regions with distinct seasonal light changes. The trait is determined by the plant's circadian regulation and light-sensing physiology rather than chronological age.
Short Day Triggering strains
No strains tagged into Short Day Triggering yet — they'll appear here as breeders submit lineage records under this classification.
Short Day Triggering refers to cannabis plants that initiate flowering in response to reduced photoperiod—typically when daylight falls below 12–14 hours. This classification encompasses most photoperiod-dependent cultivars, as opposed to autoflowering varieties that flower independent of light cycles. Breeders working with photoperiod genetics rely on short day triggering to control cultivation timing and maintain stable generational traits. Understanding this mechanism is foundational for seed selection, breeding schedules, and outdoor cultivation planning in regions with distinct seasonal light changes. The trait is determined by the plant's circadian regulation and light-sensing physiology rather than chronological age.
Breeders select for consistent short day triggering to ensure predictable flowering windows in controlled environments and to maintain photoperiod dependency across breeding lines. This trait is critical for multi-generational selection work and for preserving classic cultivar architecture.
Educational reference · Cultivar metadata only · No medical claims