Unlike other variegated varieties, 'Summer Carnival' displays excellent vigor, has great flower coverage, and forms a beautifully shaped habit. 7", dark magenta pink flowers cover the plant. Each leaf has a narrow cream margin and the edges have a hint of blush. These North American native plants bring massive, tropical-looking flowers all the way to zone 4. Although later to emerge than most perennials in spring, these are fast growing plants capable of adding an inch of new growth a day.