Secondary Pigmentation

Secondary pigmentation refers to non-chlorophyll color compounds that emerge in cannabis tissues, distinct from the primary green coloration of active photosynthesis. These pigments—including anthocyanins, carotenoids, and flavonoids—are expressed under specific environmental conditions, genetic predisposition, or plant maturity stages. Breeders and cultivators often observe secondary pigmentation as purple, red, orange, or yellow hues developing in leaves, bracts, or pistils. Expression is influenced by temperature fluctuations, light spectrum, nutrient availability, and underlying genetic markers. Secondary pigmentation has no direct relationship to cannabinoid or terpene profiles, though certain lineages are selected for consistent color expression as a phenotypic marker.

Breeders working in ornamental or specialty cultivar development frequently select for stable secondary pigmentation traits to create distinctive visual phenotypes. Color consistency across generations serves as a useful selection marker and helps distinguish cultivars in both research and commercial contexts.