I have a minature rose bush. I just noticed that the red leaves have a white dust all over the flowers and some on leaves. Can anyone help and should I separate from other plants??? help!!!

How's the miniature doing? My wife insists on bringing these home-and I get stuck trying to save them, tho' I've not had much luck. I think it's because most, if not all are raised in hot houses and really not suited to living indoors.
We've got a beautiful yellow one that's doing well now, but I haven't looked at it for about ten minutes! I've been trying to research them and found Wikipedia has a good history if you've got the patience to keep refining your search to find what you need. Hope you have great success & keep in touch...