Marvel of Peru they were called by early herbalists, who raved about this "Marvel of the World" for its various bright flower colors intermingled on the same plant. They grow rapidly from their football-shaped dark seeds and soon branch into a small shrub studded with masses of sweetly scented flowers combining the perfumes of floral rose and citrus that wait until dusk to open. Heat, humidity, and drought tolerant once fully established, they also attract hummingbirds. Once fall arrives or under cloudy skies, they often stay open during the daylight hours. If you want to overwinter the tuberous roots, dig up in autumn after frost and store them in a reasonably dry medium in a cool, dry, frost-free location, such as a garage or basement. Caution: mildly toxic roots and seeds.