91-105 Days to maturity. Callistephus chinensis. Crego Giant Mixture Aster Seeds. Non-GMO, Ornamental, Annual. Open-pollinated flower seeds. Crego Giant Mix Aster flower seeds grow a playful, robust, and familiar looking annual that can be sown among sunflowers and wildflowers. Crego Giant Mix Aster seeds grow hardy and dazzling Asters reaching as high as 36" tall with a unique seasonal blend of 3-4" blooms. Asters promise well-branched stalks that are a floral shop favorite used to brightly excite any seasonal fresh cut arrangement, basket, or bouquet. Crego Giant Mix Aster flower seeds are an ideal leggy plant to highlight the back of a garden, fence, siding, or any wide open space.