Cannabis Phenotype

Cannabis phenotype refers to the observable physical and chemical characteristics of a plant expressed from its genotype under specific environmental conditions. In breeding contexts, phenotypes include plant structure, flowering time, terpene profiles, and cannabinoid ratios—traits that emerge from both genetic inheritance and cultivation variables like light, temperature, and nutrients. Breeders assess phenotypes across generations to identify stable traits worth preserving in seed lines. Phenotypic variation within a single genetic strain can be substantial, making phenotype selection a core tool in cannabis breeding programs. Understanding phenotype stability helps breeders distinguish between stable cultivars and inconsistent offspring.

Professional breeders phenotype-hunt to isolate elite individuals from seed populations, then stabilize those traits through controlled crosses or self-fertilization. Phenotype documentation is essential for establishing cultivar standards and ensuring commercial seed or cutting batches remain true to type.