China pinks (Dianthus chinensis) produce small pink, red or white flowers in spring and early summer, with some varieties featuring bicolor blooms. Although these plants are a short-lived perennial in U.S. Department of Agriculture plant hardiness zones 6 through 9, they are often treated as a biennial because they rarely survive for more than two years. With proper care China pinks provide low-maintenance color to garden beds or container plantings.