Sesquiterpene Class

Sesquiterpenes are a large class of volatile aromatic compounds found in cannabis and many plants, composed of three isoprene units (C15H24). Common sesquiterpenes in cannabis include caryophyllene, humulene, and β-myrcene, which contribute to complex, often woody, earthy, or spicy aromatic profiles. Breeders and taxonomists use sesquiterpene profiles as secondary markers for strain classification and lineage tracking, alongside more dominant monoterpenes. Unlike monoterpenes, sesquiterpenes are heavier and often persist longer during curing and storage. Sesquiterpene-dominant profiles are frequently associated with aged or mature plant material and certain landrace genetics. Understanding sesquiterpene composition helps preserve and document genetic heritage across breeding programs.

Breeders monitor sesquiterpene ratios to stabilize aromatic phenotypes across generations and maintain strain identity. Sesquiterpene profiling is used in conservation efforts to authenticate heirloom and landrace genetics before preservation or cross-breeding.