Description : What makes rose bushes bloom twice in the same year? The odd time that it happens I mean.
Last Answer : answer:It is bred into the plant genetically. And not just for roses some newer species of iris will blood twice, some roses are everblooming, some have a burst for a week and then rebloom with less ... of these that can handle the winters of zone 4B. http://www.squidoo.com/top-10-reblooming-roses