Post Harvest Degradation

Post-harvest degradation refers to the measurable decline in cannabinoid potency, terpene volatility, and overall quality that occurs after cannabis flowers are harvested and during storage. Primary factors include oxidative breakdown of THC to CBN, evaporation of aromatic terpenes, moisture fluctuation, light exposure, and microbial activity. This classification is critical for seed banks, cultivators, and breeders tracking stability across seed lots and phenotypes. Understanding degradation rates helps inform optimal drying, curing, and storage protocols. Lineage records frequently document strain-specific resistance to degradation, with some genetics showing superior preservation of cannabinoid profiles over months.

Breeders working in preservation-focused categories often select for genetic traits that correlate with slower degradation—including dense trichome structures, lower terpene volatility, and robust cell wall integrity. Stability data from degradation studies informs parent selection for crosses aimed at commercial seed lines.