The Vibrant World of Busy Lizzies, Balsams, and Touch-me-nots | Many gardeners know of Impatiens walleriana , the species that lies behind the myriad colorful garden varieties that brighten up containers, window boxes, and shady spots throughout the world. The genus Impatiens is enormous, comprising over a thousand species—many of which, although highly desirable, remain lilttle known to Western gardeners. ...