The amazing Blue Butterfly Clerodendrum blooms an abundance of two-toned blue butterfly-like flowers throughout the year. This beautiful tropical plant is shade loving and will work great as a potted specimen if temperatures drop below freezing in your area. Zone 9 to zone 11 for hardiness. The plants grow as a bush and can reach heights of 6 - 7 feet. A favorite at Jen's Tropicals. 2-10-10 Fertilizer is best for blooming. Nitrogen for healthy green growth may be added by using 17-5-11 Nursery Fertilizer during the warm months.