Frost brings an abrupt end to the growing season for tender bulbs—cannas, callas, caladiums, dahlias, tuberous begonias, gladioluses, and tuberoses, to name some of the most common. Some might survive a winter outdoors in Zone 7 or warmer, but in colder climates they perish if left in the ground. You might think that the cost of new bulbs is low enough that it’s not worth the hassle of digging and storing the bulbs.