Structural Phenotype

Structural phenotype refers to the observable physical architecture of cannabis plants—including height, branching pattern, internode spacing, and leaf size. These traits are determined by both genetic inheritance and environmental factors like light, temperature, and growing technique. Breeders have developed distinct structural categories ranging from compact, bushy plants to tall, linear-growth types, each with cultivation and breeding advantages. Understanding structural phenotypes is foundational to crop planning, as plant form directly influences canopy management, yield efficiency, and compatibility with different growing systems. Lineage records frequently document structural outcomes as a primary breeding goal, especially when crossing cultivars bred for indoor versus outdoor environments.

Breeders select for specific structural phenotypes to optimize yield per square foot, simplify training requirements, and match plants to particular growing environments or harvest machinery. Structural traits are highly heritable and relatively stable across generations when proper parent selection and controlled crosses are employed.