Storage Temperature

Storage temperature refers to the environmental conditions maintained during seed and biomass preservation, a critical factor in maintaining genetic viability and cannabinoid stability. Cannabis seeds exhibit varying dormancy and longevity profiles depending on species and breeding lineage, with cooler temperatures generally extending shelf life by slowing metabolic processes. Breeders and seed banks employ temperature-controlled environments—typically between 4°C and -20°C—to preserve genetic material across growing seasons and breeding cycles. Improper storage temperatures can accelerate degradation of cannabinoids and terpenes, and may reduce germination rates in subsequent generations. Understanding storage temperature requirements is essential for seed bank management, breeding program continuity, and maintaining consistent phenotypic expression across harvest cycles.

Breeders rely on precise temperature protocols to preserve parent lines and F1 stock between breeding seasons, ensuring genetic consistency and trait stability. Seed longevity directly impacts the feasibility of multi-year breeding projects and the ability to maintain backup genetics for research or commercial lines.