2nd Year Maturity. Dragonfly Mix seeds deliver a wonderfully unique and vibrant alternative to the traditional columbine. Dragonfly Mix seeds grow brilliant and tidy 18-24 inch tall columbine wildflowers ideal for accenting outdoor planters, walkways, or any wide open spaces. Dragonfly Mix columbine is frost hardy and easy to grow from seed, perfect as a classic and invigorating trim around any stale flower bed.