|Where the New England aster (Aster novae-angliae) is hairy, this clump-forming, rhizomatous perennial is hairless. From late summer to mid-fall, the cultivar 'Red Star' bears corymb-like panicles of large, purplish-red flowerheads with bright yellow disk florets. This aster does best in sun or part shade where soil is moist, fertile, and well-cultivated. Grows 12 to 16 inches tall with a spread up to 36 inches. Divide every second or third year. To encourage bushy growth, cut back by 1/2 in late spring or early summer. Native to eastern North America.