Flower Color Genetics

Flower color in cannabis is governed by multiple genetic pathways, primarily involving anthocyanin and carotenoid pigment production. Purple, red, and blue hues typically emerge from anthocyanin accumulation, while yellows and oranges derive from carotenoids. These pigments are influenced by temperature, pH, light exposure, and underlying genotype—making color expression phenotypically plastic. Breeders working in this category often document color stability across generations to distinguish true-breeding lines from environmentally induced variation. Understanding the genetic basis helps differentiate between cultivar-specific traits and grow-condition artifacts.

Breeders use color genetics as a secondary selection marker when establishing strain identities and maintaining genetic consistency. Stable color expression can serve as a visual confirmation of genotype stability, though it remains a minor criterion compared to cannabinoid and terpene profiles.