Flower Frostiness

Flower frostiness refers to the crystalline trichome coverage that appears on cannabis flower surfaces, creating a silvery or frosted appearance. This trait results from dense accumulation of resinous glandular trichomes—structures that produce cannabinoids and terpenes. Frostiness is often associated with high trichome density rather than a specific terpene compound itself, though it correlates with plants bred for robust resin production. Breeders and cultivators track frostiness as a visual marker of trichome maturity and resin abundance. The phenomenon is influenced by genetics, growing conditions, and harvest timing, making it a useful phenotypic indicator during selection work.

Breeders often select for visual frostiness as a marker of trichome-rich genetics, particularly when developing lines intended for extraction or resin-focused applications. High trichome density correlates with robust secondary metabolite production, making frostiness a practical field-selection tool during breeding programs.