Rose of sharon plant is a shrub prized for the size of its flowers, long blooming period and striking cylindrical growth habit (due to this growth habit rose of sharon can, in fact, be pruned so as to resemble a small tree). For a succinct introduction to growing the plant, see my rose of sharon article. In that article and in my flowering shrub gallery, you can see rose of sharon pictures.
Note on the Comments section below for rose of sharon: As of 6/17/2008, 50 comments have been posted, and that's a good cut-off figure (it's getting too unwieldy). No further questions on rose of sharon will be answered in the Comments section; instead, please post any questions in the Landscaping forum.