I am hoping to set up a bee hive in a field close to our childrens nursery. I was told that if you grow a hedge 6 or 8 ft high around the bee hives it will force the bees to fly up to that height before they fly off gathering pollen. Thus they are less likely to bother people. As leylandii are the fastest growing hedge, I would like to proagate a number to form the hedge. Any suggestions please.