"The Ageratum Artist Blue Violet , 'Ageratum hybrid', has beautiful bicolor blue violet blooms. This Proven Winner plant is able to renew itself continuously throughout the season by over-growing old blooms with fresh colorful new blooms. The Artist Blue Violet has an open habit and will add texture and mid-height interest in large containers or landscapes. They produce radiant clusters of fuzzy flowers, early and on even compact plants. Ageratum are great for borders, containers, and rock gardens.For zones 9-11, this plant can also be a perennial."