2nd Year Maturity. Sunfire coreopsis seeds grow a neat yet spectacular twist to traditional seasonal favorites. Sunfire seeds mature as neat 18-24 inch coreopsis shrubs overgrown with generous 2 inch sunburst yellow semi-double daisy-like blooms. Sunfire is a Fleuroselect Novelty Winner for "uniform and early blooming." Sunfire coreopsis seeds are the perfect grow for window boxes, baskets, and indoors or hardy enough fill out a flower bed for rich, vibrant color up until the frost.