Originating from Mexico and Guatemala, Dahlias were the flowers of Inca kings and despite their royal origins Dahlias are among the easiest plants to grow in the garden. They are a wonderful source of cut flowers and will provide a veritable cornucopia of colorful blooms for your bouquets from mid summer until the first hard frost in the late fall. Dahlias are hardy in zones 8 -10. Dahlias are susceptible to cold so be careful not to plant them too early and be sure to dig them up and store them in a frost-free place before old Jack Frost comes calling if you are planting them in a cooler zone! Your new Dahlias tubers can be stored in the refrigerator until planting time or get a head start on spring and start them indoors in a sunny window.