IT WORKS! i have done it once and my father did it for years! 90% of homeowners would never know what those bushes are, but they might wonder why you would want some big leafy bush growing there, to be honest, if you cant make it aesthetically eye catching it will still catch a little attention, but if you add a lot of eye catching and believable flowers, then BAM! you no longer have some strange leafy bush but a nice big flower bush. it's best to use flowers not to well known, black eyed susan or sunflower shaped flowers aren't believable, nor are lilys tulips or roses, your best bet is the vine type flowers, the lesser known ones...people might wonder why a white daisy like flower is coming from a big bush if they garden and look even closer...