Long Flowering Duration

Long flowering duration refers to cannabis cultivars that require extended time in the flowering phase before reaching maturity, typically 10–14+ weeks or longer depending on environmental conditions and genetics. Strains with this classification are often associated with complex cannabinoid and terpene development, as the extended flowering window allows for continued biosynthesis. Lineage records frequently report long-flowering phenotypes among certain landrace and photoperiod-dependent varieties, particularly those derived from equatorial or high-altitude origins where natural light cycles favor extended growth periods. Breeders working with these genetics must account for extended cultivation schedules and potential mold resistance challenges in humid climates. This classification is distinct from flowering time measured in days and reflects the biological maturation arc of the plan

Long-flowering cultivars are selected by breeders pursuing complex terpene profiles and cannabinoid maturation. Growers in controlled environments often stabilize or shorten these traits through selective breeding, while some breeding programs intentionally maintain extended flowering to preserve specific genetic characteristics.