Tropicana Canna foliage is exotic and astonishing, the flowers are magnificent. They are plants that landscape professionals reach for when they need to create an impact. These plants take the hero position in mixed container plantings. Tropicana Cannas thrive with no fuss, making them the favorite canna of home gardeners everywhere. For mild Winters (USDA zones 7 through 11), as soon as the leaves begin to die back, cut off foliage to soil level, and leave in-ground or in pots over the Winter. In Spring, growth will start up as warmer temperatures arrive. Areas with severe Winters (USDA zones 3 through 6), as soon as the leaves begin to die back, cut off foliage to about 4 in., dig up the rhizomes, let them dry for a few days in a protected area. Store the rhizomes in a cool dry place for the Winter surrounded with wood chips if possible. Divide the rhizome shoots and replant in spring after last frost. Start indoors to get an early jump on the season, but do not put outside until all danger of frost is past. They require a soil temperature minimum of 60° to begin to grow in early spring, but grow best once temperatures reach 75F plus.