Plant Height

Plant height refers to the vertical growth dimension of a cannabis plant from base to canopy apex, typically measured at maturity. This trait is influenced by both genetic background and environmental factors including light intensity, photoperiod, nutrient availability, and growing medium. Height classifications commonly range from dwarf varieties (under 60 cm) to tall phenotypes (over 2 meters), with most cultivated strains falling in the 60–180 cm range. Breeders frequently select for specific height ranges to optimize grow space efficiency, canopy management, and light penetration. Understanding a strain's expected mature height is essential for cultivation planning, particularly in constrained environments.

Breeders working in confined growing systems—especially indoor operations—actively select for compact plant architecture to maximize yield per square meter while maintaining canopy uniformity. Height genetics are often controlled by multiple loci and interact strongly with photoperiod sensitivity and branching patterns, making height a key component in modern strain development.