Dahlia, perennial and multi-flowered, is commonly called potato flower. Dahlia, also known as dahlia, peony, dahlia, passionflower and chamomile, is a perennial herb of the Asteraceae family. Chrysanthemums bloom proudly in frost, but dahlias are different. They bloom continuously in spring and summer, bloom again after summer, and wither when frost falls. Its flower shape is similar to that of the beautiful and fragrant peony, and its colors are gorgeous and lovable.