Strain Chemotype

Strain chemotype refers to the chemical profile of a cannabis plant—the complete composition of cannabinoids, terpenes, and other secondary metabolites that distinguish one genetics from another. Rather than a single compound, chemotype describes the whole-plant chemistry that results from genetic inheritance and environmental expression. Breeders classify cannabis into broad chemotypes (THC-dominant, CBD-dominant, balanced, or terpene-forward) as a foundational tool for understanding inheritance patterns and predicting offspring profiles. Chemotype stability is a key breeding objective, as it determines whether a line will reliably express desired chemical ratios across generations. Knowledge of parental chemotypes allows breeders to make informed crosses and develop stable cultivars with consistent profiles.

Breeders select and stabilize plants based on chemotype as a primary criterion, often running lab testing or cannabinoid assays before choosing parents for crosses. Understanding chemotype inheritance patterns helps guide F1, F2, and subsequent generation work toward desired cannabinoid and terpene ratios.