The rose of Sharon (Hibiscus syriacus) is an especially attractive hibiscus plant that features large, showy flowers that bloom almost continuously from early summer through early fall, according to Ohio State University. Some cultivars feature flowers so ruffled that they look similar to roses. This deciduous shrub is native to China and India, and is hardy to USDA growing zone 5. This slim, upright plant is also very hardy, making it a popular choice with home gardeners who want a summer-blooming, easy-care centerpiece plant.
Place or plant your rose of Sharon in a location where it will receive either full sun or partial shade. While this plant will tolerate some exposure to shade, full sunlight (defined as at least six hours of sun exposure per day) is best, according to the University of Connecticut.
Provide well-draining soil. Hibiscus syriacus can tolerate sandy, loamy or clay soil, but it needs to be well-draining, according to the University of Florida. This plant has shallow roots that will quickly rot if left for too long in overly wet soil, such as when standing water collects.
Prune each year in the spring. The rose of Sharon can tolerate vigorous pruning and will grow back with even healthier branches and more flowers.
Add a 2-inch layer of mulch each spring to the edge of the shrub's canopy to retain moisture and stifle weed growth.
Water once a week during the summer if there is no rain, the National Gardening Association recommends. Also water if there is some rain but it is less than one inch.
Monitor for aphids, which can bother this plant with large infestations, according to the University of Florida. Rinse them off with a strong stream of water, or treat the shrub with an insecticide.