Answer: From your description, I think you're growing Canna Lilies. Canna's are tuberous-rooted perennials, native to the tropics and sub-tropics. Since your winters are cold, dig the roots and store them over the winter, then replant in the spring. Canna's have large, rich green to bronzy red leaves. Flowers bloom on 3-6 foot stalks, in summer and fall months. Remove faded flowers after bloom. After all flower clusers have bloomed, cut stalk to the ground. Dig in the fall and store in a cool location (a garage or unheated basement), then replant the roots in the spring after the soil warms up. Plant in loose, rich soil that drains well. Set five-inches deep and 10 inches apart. Enjoy your new plants.
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