Plant Height

Plant height in cannabis refers to the vertical growth potential of a cultivar, ranging from compact dwarf phenotypes to tall, stretch-prone varieties. This trait is influenced by both genetic background and environmental factors including light intensity, photoperiod, and nutrient availability. Height classifications—typically compact (under 1m), medium (1-1.5m), and tall (1.5m+)—help growers select appropriate cultivars for their growing space and method. Indica-dominant lines generally exhibit shorter, bushier structures, while sativa-dominant cultivars frequently display taller, more elongated growth patterns. Understanding plant height inheritance is critical for indoor cultivation, breeding programs targeting space efficiency, and outdoor production planning.

Breeders actively select for height traits to develop cultivars suited to specific growing environments—compact lines for vertical farms and controlled spaces, taller varieties for outdoor cultivation. Stabilizing height phenotypes within a line improves consistency across generations and reduces crop management variability.