Deep indigo blue flowers much more vibrant than B. australis and a perfect plant habit are the key features of this new variety.  An excellent floral display occurs in late spring to early summer. The deep blue-green foliage forms a more compact, upright mound to 3' tall at maturity. ‘Blueberry Sundae’ is a vigorous grower and the foliage looks great all summer. Ornamental seed pods extend the season of interest into fall.