Quick facts and care essentials
• Full sun
• Regular watering
Richly colored flowers come in red, pink, blue, purple, yellow, cream, white, and bicolors. There are two main flower types, single and double; single blossoms are simple trumpets, while double ones are ruffled blooms resembling carnations. Plants range from 8 to 27 inches high. Space 7 to 10 inches apart.