Bachelor's Button A charming annual that blooms in shades of blue, pink, and purple, bachelor's button is a great choice for hot, dry sites. The flowers are perfect for cut- and dried-flower bouquets. Starting Tips: Plant the seed about 1/8 inch deep; they typically sprout in one to three weeks. You can start it early indoors or sow it directly outdoors in the garden.
Power Perennials: Plants That Thrive No Matter What
Purple Coneflower - Once found growing wild on the American prairie, coneflowers are now one of the most widely grown and hybridized perennials in the country: http://www.bhg.com/gardening/flowers/perennials/power-perennials/?socsrc=bhgpin041914coneflower&page=9