Pigmentation Patterns

Pigmentation patterns in cannabis refer to the visible coloration variations in leaves, bracts, and flowers—including purple, red, blue, and dark burgundy hues. These phenotypic displays result from anthocyanin and other flavonoid accumulation, influenced by genetics, temperature stress, and light exposure during flowering. Pigmentation patterns are often tagged as strain-identifying visual markers, though the same genetics may express different colors under varying environmental conditions. Lineage records frequently report pigmentation as a secondary trait passed through specific parent lines, particularly those descended from Afghan, Hindu Kush, and certain Californian indica-dominant cultivars. Breeders working in this category often select for stable color expression to maintain cultivar consistency across grows.

Breeders use pigmentation patterns as phenotypic selectors when stabilizing new cultivars and as marketing identifiers for established lines. Consistent color expression requires documentation of environmental triggers and multi-generation testing to distinguish genetic from environmental coloration.