A pistil is simply a female cannabis organ. It is from this pistil that the red hairs we are talking about protrude from. The tiny hairs are called “stigmas” and they are majorly tiny hair strands that protrude from the pistil. The role of the stigma as it is with other plants is to collect pollen from male marijuana plants. Upon contact with the pollen from the male cannabis plants, the stigmas are pollinated which brings about different processes in the plant.