Unlike native perennial asters, China aster is not self-sufficient once established, because it requires even moisture, in well-draining soil.

Do asters reseed themselves?

Stake the tall varieties in order to keep them from falling over. Pinch back asters once or twice in the early summer to promote bushier growth and more blooms. Don't worry, they can take it! ... Note: Aster flowers that are allowed to mature fully may reseed themselves, but resulting asters may not bloom true.

Are China asters cut and come again flowers?

CHINA ASTER (Callistephus chinensis)

Also known as summer aster, China asters are a popular and beautiful cut flower. Plants typically grow 12-36” in height and produce a dozen or more blooms per plant, depending on the cultivar. China asters can be grown in the greenhouse or the field.