
Both your Canna and Calla Lily bulbs can overwinter outdoors in your zone.
Keep in mind that if they are needing to be divided or controlled from outgrowing a space it is best to lift them in the fall and make these divisions.
In warm zones they can be planted at any time in the spring.
https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/calla-lily-winter-care.htm
https://www.gardeningknowhow.com/ornamental/bulbs/canna/storing-canna-bulbs.htm