Butterfly Bush, Blooming Easy® Blueberry Pie™ Butterfly BushBlueberry Pie Butterfly Bush is a dwarf deciduous shrub with tidy habit and willowy grey green foliage. The pleasantly fragrant panicles of rich purple flowers with a white halo around its orange eye bloom through summer into early fall, attracting bees and butterflies. Remove spent flowers to extend bloom season. Best performance in sunny well drained areas. Drought tolerant. Type: Shrub Origins: Central China Height: 2 3 Spread: 2 3 Spacing: 2. 5