Chlorophyll

Chlorophyll is the primary photosynthetic pigment responsible for the green coloration in cannabis plants and most vegetation. While not technically a terpene (which are volatile aromatic hydrocarbons), chlorophyll is often discussed in cannabis genetics contexts due to its role in plant vigor and light absorption efficiency. The amount and distribution of chlorophyll can vary between cultivars, influencing plant appearance and potentially photosynthetic capacity. Breeders selecting for specific phenotypes may inadvertently select for chlorophyll expression patterns. Unlike aromatic terpenes, chlorophyll does not significantly contribute to cannabis aroma or smoke flavor profiles.

Plant geneticists and breeders monitor chlorophyll content as an indicator of plant health and metabolic efficiency during selection work. Cultivars exhibiting robust chlorophyll expression often correlate with faster vegetative growth, though this is one of many interacting traits influenced by environmental and genetic factors.