Description: Big-Leaved Aster gets its common name from its large, heart-shaped foliage, which has coarse-toothed edges reaching 8" across. It's often planted for these large leaves as a shaded ground cover rather than for the sometimes sparse fall flowers. The flowering stems reach one to two feet in height, topped by blossoms with 9 to 20 thin, white-violet rays surrounding a yellow center. It is common to northern woodlands, where it often forms a dense ground cover, spreading by rhizomes. In Northern Illinois, it is found in woodlands along Lake Michigan.