Short Day Triggered
Short Day Triggered refers to cannabis cultivars that initiate flowering in response to reduced photoperiod—typically when day length shortens to 12 hours or less. This trait is fundamental to photoperiodic strains, which differ from autoflowering varieties that flower based on age rather than light cycle. Lineage records frequently report this classification across most traditional indica and sativa cultivars, as well as many hybrid crosses. Breeders working in this category rely on light manipulation during cultivation to control timing of the reproductive phase. Understanding photoperiodic behavior is essential for indoor and controlled-environment breeding programs, as it allows precise timing of crop cycles and crosses.
Short Day Triggered strains
No strains tagged into Short Day Triggered yet — they'll appear here as breeders submit lineage records under this family.
Short Day Triggered refers to cannabis cultivars that initiate flowering in response to reduced photoperiod—typically when day length shortens to 12 hours or less. This trait is fundamental to photoperiodic strains, which differ from autoflowering varieties that flower based on age rather than light cycle. Lineage records frequently report this classification across most traditional indica and sativa cultivars, as well as many hybrid crosses. Breeders working in this category rely on light manipulation during cultivation to control timing of the reproductive phase. Understanding photoperiodic behavior is essential for indoor and controlled-environment breeding programs, as it allows precise timing of crop cycles and crosses.
Breeders leverage Short Day Triggered genetics to create stable photoperiodic lines with predictable flowering windows. This trait enables controlled crossing schedules, preservation of specific phenotypes across generations, and development of cultivars suited to outdoor seasonal environments or indoor rooms with adjustable lighting.
Educational reference · Cultivar metadata only · No medical claims