Short Day Requirement
Short Day Requirement refers to cannabis plants bred or selected to flower primarily in response to reduced daylight hours rather than age alone. This trait is commonly associated with equatorial and subtropical landraces, where photoperiod shift signals the plant to transition from vegetative growth to flowering. Breeders working in this category often incorporate genetics from regions near the equator, where day length varies minimally throughout the year. Understanding photoperiod sensitivity is foundational for cultivation planning, seed scheduling, and breeding programs targeting specific climate zones or indoor light regimens.
Short Day Requirement strains
No strains tagged into Short Day Requirement yet — they'll appear here as breeders submit lineage records under this family.
Short Day Requirement refers to cannabis plants bred or selected to flower primarily in response to reduced daylight hours rather than age alone. This trait is commonly associated with equatorial and subtropical landraces, where photoperiod shift signals the plant to transition from vegetative growth to flowering. Breeders working in this category often incorporate genetics from regions near the equator, where day length varies minimally throughout the year. Understanding photoperiod sensitivity is foundational for cultivation planning, seed scheduling, and breeding programs targeting specific climate zones or indoor light regimens.
Breeders use Short Day Requirement genetics to develop cultivars suited to specific geographic latitudes and to create photoperiod-dependent hybrids for controlled indoor and outdoor production. This trait is especially valuable for stabilizing flowering timing in regions with pronounced seasonal light changes.
Educational reference · Cultivar metadata only · No medical claims