I'm guessing that they pruned the roses so we can't get as many: Kniles' rose and the others in Radeka's cage were originally blood roses and all could be used to make the attar but I guess they've been de-categorised for some reason. And the permanent effects of the one you can still get have rather temporary amounts of permanence.
Well if that's true, they really should take the time to somehow convey this to the player in a consistent fashion, because the differentiation between them isn't clear; one is called a blood rose described as a rare rose, while the other is a rose described as a blood rose.
And if one of them doesn't have any use whatsoever, it should be removed, and if the buff doesn't do anything, why does it even exist?
It's a mess.
