Stratification Requirements

Stratification requirements refer to the dormancy-breaking conditions certain cannabis seeds need before germination can occur. This trait is particularly relevant in seeds from breeding programs involving landrace genetics or lines selected from outdoor heritage populations, where natural seasonal cycles shaped seed behavior. Seeds with stratification requirements typically need exposure to cold, moist conditions—mimicking winter dormancy—before they'll reliably sprout. Breeders working with heirloom or cold-climate adapted genetics often document these requirements to ensure successful propagation and seed viability across generations. Understanding stratification is essential for seed banks and cultivators managing heritage or wild-derived genetics.

Breeders selecting for cold-climate adaptation or attempting to preserve landrace genetics must account for stratification needs in their seed production workflows. Documenting and sometimes selecting against strong stratification requirements makes seeds more accessible to growers in controlled environments, while maintaining these traits can be valuable for outdoor breeding programs in temperate