For optimal blooms, cannas need full sun and humus-rich, moisture-retentive soil. In the shade, they tend to produce more leaves than flowers.
Plant the rhizomes directly in the ground once all danger of frost has passed or in pots indoors in early April to give them a head start.
Cannas are not hardy in Quebec. Cut the plants back to the ground before the first frost in fall and dig up the rhizomes. Let them dry for a few hours before storing them in a cool, dry spot (10-15°C) for the winter.
Plant out: mid-May
Dig up: October, after the second frost