Senescence Markers

Senescence markers refer to observable physical changes in cannabis plants that indicate the final stages of the flowering cycle, typically occurring in the final 2-4 weeks before harvest. These markers include browning or reddening of pistils (stigmas), chlorophyll breakdown causing leaf discoloration, resin gland maturation visible on trichomes, and changes in plant structure as nutrient translocation occurs. Breeders and cultivators use senescence markers as practical indicators of peak cannabinoid and terpene development, though timing varies significantly by strain genetics and environmental conditions. Understanding these markers is essential for consistent breeding documentation and crop management, as they help distinguish between natural maturation and stress-induced decline. Different cultivars express senescence markers at varying rates—some showing rapid color changes while o

Breeders monitor senescence markers to establish strain-specific harvest windows and to select parent plants with desirable maturation profiles. Consistent senescence expression helps breeders standardize production timelines and create predictable phenotypes across generations.