Roses do not have nectar glands and do not produce nectar, nor do they produce much pollen. Besides, even if the rose will be nectar, but also to gather a considerable area, in order to provide enough nectar for the bees to collect nectar (this amount is very extensive, the light of a few acres of cultivation can only provide a few boxes of bee collection, to form a large number of circulation of commercial honey, then the rose planted or wild area at least need to be the whole region generally, so that the output of commercial honey is possible). Therefore, the wild rose honey, snow fat even honey, etc. are businessmen to cast their favor, another name of the "ghost honey".