Terpene Phenotype

A terpene phenotype refers to the observable aromatic and chemical profile of a cannabis plant, determined by which terpenes are expressed most prominently during growth and maturation. Unlike genotype (the plant's genetic blueprint), phenotype is the actual manifestation of terpene production influenced by genetics, growing conditions, timing of harvest, and environmental stress. Lineage records frequently report consistent terpene phenotypes within established strain families, though expression can vary between individual plants. Breeders distinguish phenotypes by their dominant terpenes—such as myrcene-forward, limonene-dominant, or caryophyllene-rich profiles—which inform both flavor character and breeding selection. Understanding terpene phenotypes is essential for seed-line stability and for breeding projects targeting specific aromatic profiles.

Breeders stabilize terpene phenotypes through selective breeding, crossing plants that consistently express desired terpene profiles across generations. Phenotype consistency is a primary marker of strain quality and reproducibility in seed development programs.