Charlie, where do you get your phlox? That is one of the plants I've had extreme troubles with ordering a variety of colours and ending up with one white and the rest a muddy pink? One is a little closer to purple but basically they are all the same colour.
I know where your coming from about the perfectionist side but I had to quickly learn to adjust to a more naturalistic type garden where plants can seed and spread (within reason of course) because I live and work 3 hours away from my garden and don't get the time I want to spend in it. Eventually when I move here permanently the garden will become more controlled. Maybe managed would be a better word, Mother nature doesn't like to be "controlled".