Light Green Phenotype

The light green phenotype describes cannabis plants displaying pale or yellowish-green foliage rather than the deeper forest-green typical of many cultivars. This coloration can arise from genetic factors, nutrient availability during growth, or environmental stress responses, and appears across multiple strain families and cannabinoid profiles. Light green phenotypes are sometimes observed in specific lineages—particularly those descended from certain Thai or Mexican landrace genetics—though expression is rarely uniform across all plants from a given seed lot. Breeders and cultivators document these visual variants as part of phenotypic diversity within strain populations, noting that leaf color alone does not reliably predict cannabinoid content, terpene profile, or growth characteristics.

Breeders tracking phenotypic variation use leaf coloration as one marker of genetic diversity within breeding populations, though it is seldom a primary selection criterion. Understanding which crosses reliably produce light green expressions helps breeders document and stabilize phenotypic ranges in established cultivar lines.