Multi Environment Testing

Multi-environment testing (MET) is a breeding methodology where cannabis cultivars are grown across diverse climatic zones, altitudes, soil types, and photoperiods to evaluate phenotypic stability and adaptability. This practice reveals which traits remain consistent across environments versus which express environmental sensitivity. MET data informs decisions about strain robustness, regional suitability, and breeding line selection. The approach originated in agricultural crop improvement and has become increasingly systematic in cannabis breeding programs seeking reliable, reproducible cultivars. Results typically highlight variations in cannabinoid ratios, terpene profiles, plant structure, and flowering duration across locations.

Breeders conducting MET can identify stable genetics suitable for multiple growing regions, refine phenotype targeting, and reduce risk when scaling production. Environmental data from MET guides parent selection and helps predict cultivar performance before commercial release.