Relative Humidity Sensitivity

Relative humidity sensitivity describes how terpene preservation and expression vary across different moisture environments during cultivation and storage. Terpenes are volatile organic compounds that can degrade, evaporate, or concentrate depending on ambient humidity levels—typically between 45–65% RH during growth and 55–65% during cure. Breeders and cultivators monitor RH because fluctuations influence both terpene retention in finished material and the stability of volatile profiles over time. Lineage records frequently report that certain strain families express more robust or mutable terpene signatures under specific humidity conditions. This trait is often studied in relation to cure methodology, post-harvest handling, and long-term storage stability rather than as a direct genetic trait.

Breeders working in controlled-environment agriculture select for cultivars that maintain terpene expression across standard humidity ranges, supporting consistency in breeding programs. Understanding RH sensitivity helps guide cultivation protocols and informs seed bank storage recommendations.