Rose of Sharon (Hibiscus syriacus)
A common garden shrub that has become something of a pest, invading hedges especially, from which it is very difficult to extricate. Perhaps the best solution is to let the Roses of Sharon take over the hedge: they make a good, dense hedge themselves, and they have these beautiful flowers. In Pittsburgh they happily bloom well into October if the weather cooperates. This bush grew beside an alley in Beechview.
From Gray’s Manual: H. SYRIACUS L. (SHRUBBY ALTHAEA of gardens.) Tall shrub, smooth; leaves rhombic- or wedge-ovate, pointed, cut-toothed or lobed; corolla usually rose-color. Established in thickets and by roadsides, N. J., Pa., and southw. July-Sept. (Introd. from Asia.)