Finishing Speed

Finishing speed refers to the duration required for a cannabis plant to complete its flowering cycle from initiation to harvest-readiness. This classification encompasses the full range from fast-finishing varieties (8-9 weeks) to extended-cycle cultivars (12+ weeks), with most commercial lines falling between 9-11 weeks. Finishing speed is largely determined by genetic lineage, with indica-dominant and autoflowering genetics commonly associated with shorter cycles, while some sativa-leaning and photoperiod-dependent lines often require longer maturation periods. Breeders document finishing speed through controlled environment trials and multi-generational observation to establish reliable phenotype stability across seed batches.

Finishing speed is a primary selection criterion for commercial breeding programs, as shorter cycles enable multiple harvests per year and reduce input costs in controlled environments. Breeders working in this category often cross stable fast-finishing lines with desired terpene or yield profiles to establish new cultivars optimized for production efficiency.