Terpene Phenotype Expression

Terpene phenotype expression refers to the observable manifestation of volatile aromatic compounds in a cannabis plant, determined by both genetic potential and environmental factors. While a strain's genotype establishes the terpene profile blueprint, environmental conditions—including temperature, light, soil composition, and humidity—significantly influence which terpenes are produced and in what concentrations. Breeders and cultivators study phenotype expression to understand how genetic traits translate into measurable aromatic profiles across different growing conditions. This variability means that identical clones grown in different environments can display notably different terpene profiles, making phenotype documentation essential for breeding work and strain stability.

Breeders select for stable, consistent terpene expression by growing multiple phenotypes under controlled conditions and identifying those that reliably produce desired aromatic profiles. Understanding phenotype expression helps breeders develop cultivars with robust terpene stability across diverse growing environments.