Storage Degradation

Storage degradation refers to the chemical changes that occur in cannabis plant material over time, primarily driven by oxidation, light exposure, temperature fluctuation, and humidity. Cannabinoids like THC gradually convert to CBN (cannabinol) through oxidative processes, while terpenes volatilize and degrade, altering the chemical profile of stored flower or concentrate. Understanding these mechanisms is central to seed preservation, breeding stock maintenance, and genetic banking practices. Breeders and seed companies monitor storage conditions—cool, dark, low-humidity environments—to maintain genetic integrity across generations. Degradation rates vary significantly based on starting cannabinoid ratios, terpene composition, and storage vessel type, making this a key variable in long-term breeding programs and germplasm conservation.

Breeders working with preservation genetics study storage-stable phenotypes to identify strains with slower degradation rates for seed banking and clone libraries. Maintaining accurate chemical baselines requires controlling for storage degradation when evaluating parent plants and documenting lineage characteristics across growing seasons.