Sweetshrub has many common names, all alluding to the aromatic properties of its leaves, bark, twigs and roots. Best of all is the wonderfully fruity scent produced by the unusual flowers. Sweetshrub is easy to grow in average soil, is easy to care for and is essentially pest-free. Undemanding shrubs, they flower best in a sunny but sheltered position in fertile , humus-rich, moist soil. Hardiness: USDA Zones 5 - 9. Propagate by seeds, layers, and divisions. This shrub produces suckers in profusion. These can be easily dug and planted in a new location - at just about any time of the year provided the transplants are kept moist.