We had a beyond gorgeous Butterfly Bush, it was lavender and here is a picture, but sadly it died last winter.
We had a dry winter and the bush had not been drenched good at the end of the season so it never made it, it was always loaded with butterflies and bees. So here at our new house we planted one just like the previous one at the old house. And it was getting butterflies and Hawk Moths. I also sliced up oranges and put into a dish and not one butterfly went for it.