Trichome Coverage

Trichome coverage refers to the density and distribution of resinous glands across cannabis plant surfaces—leaves, flowers, and sometimes stems. Breeders classify plants along a spectrum from sparse to heavily frosted appearance. This trait is observable during late flowering and is commonly documented in phenotype assessments. Trichome density varies significantly between cultivars and can influence perceived potency, handling characteristics, and extraction yield. Coverage patterns are often photographed during seed-to-sale documentation and used to identify phenotypic consistency within a strain family.

Breeders select for trichome coverage as a visible marker of resin production and genetic stability. Consistent coverage across a cultivar's phenotypes helps establish trademark visual characteristics and supports quality control in commercial breeding programs.