It spreads by rhizomes. C. erubescens is often confused with the similar C. americanum, a Gulf Coast native that thrives as an aquatic plant. Other fragrant Crinums include C. 'Ellen Bosanquet' and Amarcrinum 'Fred Howard'. At home in a tropical garden, this somewhat gangly shrub to 3 feet or more can survive light frosts, but needs protection above zone 9. For half to full-day sun.
Propagation is by cuttings.
Aloysia virgata is another shrub with an unruly habit and white almond-scented flowers. Apart from fruit, one of the benefits of growing citrus trees is the inconspicuous but potent white blooms found in many forms. Satsuma oranges will weather most area winters handily, while more tender varieties such as the Meyer and Ponderosa lemon are worth a trial in tubs. Aster carolinianus is a sprawling, non-twining fall bloomer with a myriad of light purple flowers bearing a mild marzipan scent. And while we've never tried them outdoors, members of the genus Stapelia are renowned for striking, starfish-shaped flowers redolent of rotting meat or fish.