While some bulbs that need a colder winter may rebloom when planted in the garden, many will produce only leaves in subsequent years. To get a good show, consider treating bulbs like annuals.

Cold-winter climates. Winter chill isn’t an issue for cold-hardy bulbs, but freeze-and-thaw cycles can damage them. If the ground won’t be covered in snow or frozen, provide a layer of mulch.

You may also need to dig up tender bulbs such as canna lilies, dahlias and gladioluses, and overwinter them in a cool, dry location.