Sessile Trichomes

Sessile trichomes are glandular structures that sit directly on the leaf and flower surface without a visible stalk or stem, appearing as flat, coin-like glands. Unlike their stalked counterparts (pedunculate trichomes), sessile trichomes are smaller and more densely packed across cannabis plant tissues. These structures contain cannabinoid and terpene-producing cells and are particularly abundant on flowering bracts and sugar leaves. Sessile trichomes represent one of the primary resin-secreting morphologies in cannabis, and their prevalence varies significantly across genetic lines. Understanding sessile trichome density and distribution is relevant for both cultivation observation and breeding selection.

Breeders monitor sessile trichome density and maturation as a visual marker during phenotype selection and harvest timing assessment. Lines exhibiting robust sessile trichome development are often prioritized in breeding programs focused on resin production characteristics.