Clone Drift

Clone Drift refers to the gradual accumulation of genetic and phenotypic variation observed in vegetatively propagated cannabis lines over successive generations of cutting. While clones are derived from a single mother plant's genetics, environmental stressors, epigenetic changes, and somaclonal mutation can produce observable shifts in cannabinoid ratios, terpene profiles, plant morphology, and growth characteristics across generations. This phenomenon is particularly documented in long-running cultivation programs where the same clone line is maintained for extended periods. Breeders and cultivators track these changes to understand stability, preserve desired traits, and sometimes intentionally select for beneficial drift variations. Clone Drift is distinct from genetic mutation but shares mechanisms with somaclonal variation commonly observed in tissue-cultured plants across species

Breeders monitoring clone lines use drift patterns to identify which genetic backgrounds are most stable under standard cultivation. Some breeding programs intentionally leverage controlled drift to develop new phenotypic expressions within established clone families without formal hybridization.