Low Heat Stability

Low Heat Stability refers to cannabinoid and terpene profiles that degrade or shift when exposed to elevated temperatures during drying, curing, or processing. Strains with this trait often lose volatile compounds, experience cannabinoid oxidation, or show reduced potency in the finished product if temperature control is not carefully managed. Breeders and cultivators working with low heat stability genetics must employ lower-temperature drying (typically 55–65°F) and avoid high-heat extraction or post-harvest handling. This family is commonly observed in sativa-dominant and landrace-derived lines, where the genetic architecture appears to produce more thermolabile (temperature-sensitive) phytochemicals. Understanding heat sensitivity is critical for preservation of terpene expression and cannabinoid integrity across seed-to-harvest workflows.

Breeders working in temperature-controlled environments or breeding for preservation-focused genetics may deliberately select or cross with low heat stability lines to maintain complex terpene profiles. Conversely, commercial producers often avoid these genetics unless they have infrastructure for cold-chain processing, making heat stability a practical selection criterion in modern breeding progr