A clean q-tip or craft paintbrush is effective. Wait at least 3 to 4 days to determine whether fertilization was successful.
Soul recommends removing the female to be pollinated from the grow area to pollinate. After 3 to 4 days spray the pollinated plant with water to kill any residual pollen and return to the flower room.
Soul recommends pollinating 4 weeks before the female plant will finish. He also suggests not removing the seeds from their buds until the buds are completely dry, as they will continue to mature after harvest.