Mass Selection

Mass selection is a foundational breeding practice in which plants displaying desired traits are grown together, allowed to cross-pollinate, and their offspring are repeatedly selected over multiple generations for consistent expression of target characteristics. Unlike controlled single-plant crosses, mass selection relies on natural pollination within a population, making it efficient for stabilizing traits across larger plant groups. This method has shaped many traditional and modern cannabis cultivars, particularly in regions where structured breeding records were limited. Breeders working in this category often use mass selection to fix phenotypes related to growth pattern, yield structure, or terpene profiles across diverse genetic backgrounds. The approach requires careful isolation to prevent unwanted cross-contamination and multiple growing cycles to achieve genetic stability. M

Mass selection is valued for rapidly establishing dominant traits across a population without requiring extensive pedigree tracking. Breeders employ it when working with large seed lots, heirloom genetics, or when stabilizing polygenic traits like plant architecture or cannabinoid ratios.