Sessile Trichomes

Sessile trichomes are cannabis glandular structures that lack a visible stalk or stem, sitting directly on the plant surface. Unlike their stalked counterparts (capitate-stalked trichomes), sessile varieties are smaller and more densely packed across leaves, flowers, and stems. These structures produce cannabinoids and terpenes but in lower concentrations per individual trichome compared to stalked forms. Sessile trichomes are frequently observed across all cannabis cultivars and represent an early stage of resin gland development. Their presence contributes to overall plant resin production, though breeders typically prioritize cultivars with abundant capitate-stalked trichomes for cannabinoid-rich phenotypes.

Breeders monitor sessile trichome density as an indicator of plant health and resin maturity, though selective breeding traditionally emphasizes capitate-stalked trichome development for higher secondary metabolite concentration. Understanding sessile trichome prevalence helps breeders assess phenotypic expression and maturation timing across genetic lines.