Callistephus chinensis, or China asters, begin blooming in late summer and continue through early fall and can grow 3 feet tall. The Matsumoto series of cultivars include Matusumoto Apricot, a coral-colored annual aster that grows up to 3 feet. Popular for cut flowers, the tall stems need support. Plant these annuals in sun to part shade, 8 to 10 inches apart. Consider planting China asters in front of tall grasses like plume grass or maiden grass.
Novi-belgii Schone Von Dietlikon is a tall New York aster cultivar with blue-violet flowers that has yellow centers; reaching 3 feet tall, this flower blooms from early fall through November. This perennial aster, also called Michaelmas daisy, is hardy and grows best in full sun in a rich soil. Schone Von Dietlkion is a good choice, as this cultivar does not need staking, is resistant to mildew, lasts eight to 10 days as a cut flower -- and deer avoid it.
Harrington's Pink New England aster grows to an impressive 4 feet and blooms in early fall. With its rosy pink blooms, it looks great planted behind shorter fall-blooming perennials such as catmint and pincushion flowers. These giants may need staking. Andenken an Alma Potschek, with its bright pink flowers with yellow centers, begins blooming in July and lasts weeks until late fall and the first frost. This easy-to-grow perennial also reaches heights of more than four feet and is stunning planted in groupings.
Wedding Lace, 3 to 4 feet high, is a favorite for its pure white flowers. This cultivar can tolerate wet soils and is a butterfly magnet. September Rudy can reach up to 5 feet and has deep ruby red flowers with a golden center. This hardy cultivar blooms from September until frost and does best in sun to part shade. Pinch back in summer until the end of June for better branching and more flowers.