Post Harvest Degradation

Post-harvest degradation refers to the chemical breakdown of terpenes and cannabinoids after plant harvest, a critical concern in cannabis preservation and breeding. Environmental factors—heat, light, oxygen exposure, and humidity fluctuations—accelerate the loss of volatile compounds, altering the strain's original aromatic and chemical profile. Terpenes are particularly susceptible; studies document measurable terpene loss within days of improper storage. Breeders and cultivators track degradation rates as part of strain stability assessment, particularly when evaluating long-term seed viability and dried flower shelf-life. Understanding degradation patterns informs drying protocols, storage standards, and expectations for genetic expression across harvest batches.

Breeders select for chemically stable lineages by monitoring terpene retention across storage conditions and generations. Strains with robust terpene profiles and slower degradation curves are valued for consistency in commercial cultivation and seed banking applications.