Answer: You can certainly save these from year to year. Once a frost has killed the tops, dig them up and allow them to dry. Pack them in a paper (not plastic) bag or cardboard box with peat moss, sand or similar material and store them in a dry place at about 50 degrees until spring. Replant them when the soil is warm and there is no danger of frost, or start them a bit earlier in pots indoors.
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