Node Structure

Node structure refers to the physical spacing and arrangement of branching points along a cannabis plant's stem, rather than a terpene itself. Breeders distinguish between tight-node and wide-node phenotypes, which influence canopy density, light penetration, and airflow patterns during cultivation. Tight-node varieties are often associated with compact growth habits and higher bud clustering, while wide-node plants typically develop more open architecture. This structural trait is heritable and frequently observed across specific cultivar lineages, making it a practical selection criterion in breeding programs focused on cultivation efficiency and plant form.

Breeders working in indoor and greenhouse environments often select for tight-node phenotypes to maximize yield per square meter and reduce disease pressure through improved air circulation. Wide-node selections are sometimes favored in outdoor or high-ceiling environments where vertical space is less constrained and branching extension is desirable.