90-120 Days to maturity. Callistephus chinensis. Single Rainbow Mix China Aster Seeds. Non-GMO,ornamental, annual, heirloom, cut flower. Single Rainbow Mix China Aster flower garden seeds grow cut-flower-worthy, spring, summer, and fall blooms fit for royalty. These lightly fragranced blooms come in a variety of beautiful colors and are known for being adaptable and easy to grow. The daisy-like flowers burst above lush foliage that is sure to complete the look of any garden, planter, or flower bed. Approximately 1,200 seeds/oz.