Plant Structure Phenotypes

Plant structure phenotypes describe the observable physical architecture of cannabis plants—encompassing height, branching patterns, internode spacing, leaf size, and overall growth habit. These traits are determined by both genetic inheritance and environmental conditions, making them central to breeding programs targeting specific cultivation environments and harvest efficiency. Breeders working with structure phenotypes categorize plants along spectrums from compact "bush" morphologies to tall, open-branching "tree" types, each with distinct agronomic implications. Structure phenotypes directly influence canopy density, light penetration, pest management, and yield distribution across the plant. Understanding these genetic patterns allows cultivators and breeders to select for traits suited to indoor vertical systems, outdoor field production, or hand-trimming workflows.

Breeders intentionally select for structure phenotypes to match production methods: compact indicas for space-limited environments, taller sativas for outdoor cultivation, and intermediate hybrids for versatility. Structure is one of the most observable traits for phenotype hunting and stabilization in breeding programs.