William R. Smith Rose of Sharon
Hibiscus syriacus 'William R. Smith'
William R. Smith Rose of Sharon flowers
(Photo courtesy of NetPS Plant Finder)
Height: 10 feet
Spread: 6 feet
Hardiness Zone: 4b
Other Names: Shrub Althea
A tall, stiffly upright shrub with vase shape habit; beautiful, showy blooms are pearly white; very adaptable plant, but prefers full sun; ideal for the mixed garden border or massed as a screen
William R. Smith Rose of Sharon features bold white trumpet-shaped flowers along the branches from mid summer to early fall. It has dark green deciduous foliage. The lobed leaves do not develop any appreciable fall color.
William R. Smith Rose of Sharon is a multi-stemmed deciduous shrub with an upright spreading habit of growth. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition.
This is a high maintenance shrub that will require regular care and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. It is a good choice for attracting butterflies and hummingbirds to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;
William R. Smith Rose of Sharon is recommended for the following landscape applications;
Planting & Growing
William R. Smith Rose of Sharon will grow to be about 10 feet tall at maturity, with a spread of 6 feet. It tends to be a little leggy, with a typical clearance of 2 feet from the ground, and is suitable for planting under power lines. It grows at a medium rate, and under ideal conditions can be expected to live for 40 years or more.
This shrub does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selected variety of a species not originally from North America.
William R. Smith Rose of Sharon makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor pots and containers. Its large size and upright habit of growth lend it for use as a solitary accent, or in a composition surrounded by smaller plants around the base and those that spill over the edges. It is even sizeable enough that it can be grown alone in a suitable container. Note that when grown in a container, it may not perform exactly as indicated on the tag - this is to be expected. Also note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.