Carotenoid Coloration

Carotenoid coloration refers to the pigmentation produced by carotenoid compounds in cannabis plants, commonly displaying yellows, oranges, and reds in flowers, leaves, and trichomes. These pigments are secondary metabolites distinct from chlorophyll and anthocyanins, often becoming more visible as plants mature or experience environmental stress like temperature fluctuation or nutrient shifts. Carotenoid expression is influenced by genetics, light exposure, and growing conditions; lineage records frequently report carotenoid prominence in certain cultivar families. Breeders working with this trait note that carotenoid-rich phenotypes tend to correlate with specific terpene profiles, though the relationship remains an area of active horticultural observation. Carotenoids themselves have broader biological functions in plant health and may contribute to oxidative stability during storage

Breeders often select for carotenoid expression as a visual marker of phenotype stability and environmental adaptation. Carotenoid-dominant color traits are used in breeding programs to identify or stabilize desired chemotype outcomes, particularly when paired with terpene or cannabinoid profiling.