I did more digging .... Apparently Brugmansia "versicolor" or a "cubensis hybrid" may have the largest flowers ....they can be up to 20" long. Also comes in more variety of colors. Sounds like THIS is the brug species that would be the best to grow for the larger blooms. I have had named cultivars before such as Pink Beauty and Ecuador Pink. I think the pink one I have now might be Frosty Pink. It sure looks like that cultivar.
