If I recall my plant physiology correctly, hormones produced in the pollinated flower flow down the stems and suppress the development of latereral buds found at the bases of lower leaves. If I am not incorrrect, it means that the higher you prune the plant, the more potential flowers you will see developing, since you have more leaf buds that can produce flowers. At the same time, I would encourage removing the flowers as soon as you can after they have died. This way, any bud-restricting hormone produced would be minimal.
