Bog Aster naturally grows in moist woods, swamps, bog margins, and other wet, partially shaded habitats. In a home garden, it performs best in consistently moist, humus-rich soil in part shade to light shade, although it will tolerate more sun if the soil remains moist. Its delicate sprays of pale lavender to white daisy-like flowers appear in late summer through fall, providing an important late-season nectar source for pollinators.