High Myrcene Phenotypes

High myrcene phenotypes are cannabis plants expressing elevated levels of the monoterpene myrcene, typically comprising 20–65% of the total terpene profile in such expressions. Myrcene is one of the most abundant terpenes in cannabis and is also found in hops, mangoes, and lemongrass, often contributing herbal, earthy, and slightly spicy aromatics. Breeders and researchers track myrcene content as a primary marker because it influences both the aromatic signature and the overall terpene entourage in finished material. Lineage records frequently report myrcene dominance in indica-leaning and hybrid cultivars, though phenotypic variation within any given cross is common. Understanding myrcene-forward expressions is valuable for breeding programs focused on aroma stability and terpene profiling.

Breeders select for high myrcene phenotypes when establishing aromatic consistency or when working toward specific flavor/aroma targets in hybrid development. Myrcene's boiling point (166–168°C) and volatility make it a key consideration in preservation and processing decisions.