Commonly called butterfly bush, buddleja can reach fifteen feet and flowers in shades of purple, lavender, pink, white or yellow. It is also available in an increasing number of dwarf varieties, most of which grow to three to five feet. The flowers are a favorite of butterflies, hence the common name. All the Buddlejas perform best if they are pruned severely before spring growth begins. The flowers are fragrant and contain an unusual bright orange eye.