Extended Internode Spacing

Extended internode spacing refers to cannabis plants that develop noticeably longer distances between leaf nodes along the main stem and branches. This trait is influenced by genetic background, light conditions during vegetative growth, and environmental factors like temperature and humidity. Breeders working in this category often observe this structure across both photoperiod and autoflowering lines, though expression varies. The phenotype can affect canopy architecture, light penetration to lower branches, and overall plant structure during cultivation.

Breeders select for or away from extended internode spacing depending on cultivation goals—wider spacing can reduce dense canopy problems and improve airflow, while compact internodes are preferred for space-limited environments. Understanding this trait's heritability helps inform parent selection and phenotype prediction in breeding programs.