Growth Structure Types

Growth structure types refer to the fundamental morphological patterns that cannabis plants express during their lifecycle—primarily indeterminate (sativa-leaning), determinate (indica-leaning), and intermediate phenotypes. These patterns influence plant height, branch architecture, internode spacing, and flowering node distribution, and are largely polygenic traits influenced by both genetic background and environmental conditions. Structure type affects cultivation decisions including spacing, training requirements, and canopy management. Breeders working in regulated markets and commercial cultivation contexts frequently select for structure predictability to standardize crop outcomes. Understanding structure classification helps growers match plant genetics to their growing environment and techniques rather than to predict effects.

Breeders use structure-type selection to create stable cultivars suited to specific production systems—compact structures for indoor and high-density cultivation, taller structures for outdoor and greenhouse environments. Consistent structure typing enables reliable training protocols and reduces phenotypic variability in commercial contexts.