Dahlias are purchased as tubers for spring planting, in pots for immediate color, or as seeds, with top varieties including the yellow 'Kelvin Floodlight' and purple 'Thomas Edison'. Popular retailers for purchasing tubers and plants include Breck's, Home Depot, and American Meadows. Explore available dahlia tubers and potted plants. Go to product viewer dialog for this item. Kelvin Floodlight Dahlia