Green Calyx Expression
Green calyx expression refers to the retention of chlorophyll in the sepals and bracts surrounding cannabis flowers, resulting in predominantly green rather than purple, red, or brown coloration at maturity. This trait is largely controlled by genetics and environmental factors, with certain lineages—particularly those derived from equatorial or tropical genetics—commonly exhibiting sustained green pigmentation throughout flowering. The phenotype is often observed in Sativa-dominant and landrace-influenced cultivars, where extended photoperiods and warm growing conditions historically favored chlorophyll retention over anthocyanin production. Breeders distinguish green calyx expression from other calyx colorations to accurately catalog strain morphology and predict visual characteristics across growing environments.
Green Calyx Expression strains
No strains tagged into Green Calyx Expression yet — they'll appear here as breeders submit lineage records under this classification.
Green calyx expression refers to the retention of chlorophyll in the sepals and bracts surrounding cannabis flowers, resulting in predominantly green rather than purple, red, or brown coloration at maturity. This trait is largely controlled by genetics and environmental factors, with certain lineages—particularly those derived from equatorial or tropical genetics—commonly exhibiting sustained green pigmentation throughout flowering. The phenotype is often observed in Sativa-dominant and landrace-influenced cultivars, where extended photoperiods and warm growing conditions historically favored chlorophyll retention over anthocyanin production. Breeders distinguish green calyx expression from other calyx colorations to accurately catalog strain morphology and predict visual characteristics across growing environments.
Breeders working in this category track green calyx expression as a morphological marker to identify and stabilize Sativa or tropical lineages. This trait is useful in phenotype selection, breeding records, and consistency documentation across seed generations.
Educational reference · Cultivar metadata only · No medical claims