Internode Length Extended

Extended internode length refers to increased spacing between leaf nodes along a cannabis plant's main stem and branches. This structural trait is commonly associated with sativa-dominant genetics and equatorial landrace varieties, where plants evolved under consistent light cycles to maximize vertical growth. Breeders working in this category often select for this phenotype when developing tall, open-canopied cultivars suited to outdoor cultivation or high-ceiling environments. Extended internodes can influence canopy architecture, light penetration, and training responses, making this classification relevant for cultivation strategy planning. The trait is generally heritable and appears across multiple modern breeding lines derived from sativa ancestry.

Breeders use internode length as a structural selection criterion to develop cultivars for specific growing environments and training methods. Extended internodes are often paired with vigor and light-responsiveness traits, supporting work toward tall, sprawling phenotypes for outdoor or greenhouse production.