Properly overwintering these tropical rhizomes involves preparing them for dormancy and protecting them from freezing temperatures. These steps ensure viability and promote robust growth in the subsequent growing season. Canna plants, being sensitive to cold, require specific care to survive in regions with freezing winters.
The practice of correctly preserving these tender perennials offers several advantages. It allows gardeners in colder climates to enjoy the vibrant colors and foliage of these plants year after year, rather than treating them as annuals. Historically, canna cultivation has been tied to tropical and subtropical regions, but techniques for overwintering have expanded their range into temperate areas.