Rita,
Plant it in your garden and let it self sow, it does for me! I'm zone 6 and I get new plants in the areas the following year where the plants were growing. I just submitted a photo of plants that are all volunteers! May take a couple of days before it shows up. I have two areas that I have 'Lady in Red' growing in the ground that are volunteers and I always let them self sow.
Try it! You'll be so happy!
