no, blue roses don’t occur in nature- but they’re easy to make artificially. just place a cut white rose into blue-dyed water and wait a bit, and eventually the rose will be blue. also why did you ask me this
i used to stick flowers in dye as a kid to make them different colors
every month i track down and kill a member of various professions so that i can absorb their workplace knowledge. last june i shredded a florist