How do you mix Bouille Bordelaise for Roses?

I recently bought Bouille bordelaise because I would like an organic garden; I have several roses bushes badly infested with fungi and bugs that are black that like to nest in them; I do not know the ratio to mix for roses the box gave indications for other plants, but not Roses! I also have a lemon tree that doesn't seem to bloom this year, I would appreciate communicating with other gardeners! Thanks, WSkywalker_ La Ciotat