Cannabinoid Potency

Cannabinoid potency refers to the concentration of active cannabinoids—primarily THC and CBD—within cannabis plant material, typically measured as a percentage by weight. Breeders and researchers classify strains along a potency spectrum, from low-cannabinoid landraces (under 5% THC) to modern selections exceeding 20% THC or CBD. This classification emerged alongside laboratory testing standardization in the early 2000s and remains a primary descriptor in breeding programs and regulatory frameworks. Potency measurements reflect both genetic expression and cultivation conditions, making them useful markers for lineage documentation and strain consistency. Understanding potency classification helps breeders identify parent material suited to specific breeding objectives and informs seed catalog descriptions.

Breeders select for cannabinoid potency by crossing parent plants with verified cannabinoid profiles, using test results to identify high-producing individuals. Potency class becomes a foundational breeding target alongside other traits like terpene expression, plant structure, and disease resistance.