I brought my Canna inside in September (first sign of frost) and have it in a south facing window. It keeps sending up shoots and flower stalks and blooms. Will it ever spontaneously stop so I can let it hibernate?
You must, first, let the green growth die off outside. These cooler temperatures are what initiates dormancy. Bringing them in will only keep them growing, and not allow them the proper time to rest. Just make sure to wrap the roots so they will remain warm while the tops get killed by the cold. This article will give you more information on wintering these: https://www.gardeningknowhow.com/ornamental/bulbs/canna/storing-canna-bulbs.htm
Should the roots be cut off before storing the rizone’s in a paper bag in a closet?
You should leave those roots alone, and cut back the growth to only a few inches after it has died back. The storing process is not complicated if done correctly. This article will advise you on how to do so: https://www.gardeningknowhow.com/ornamental/bulbs/canna/storing-canna-bulbs.htm
I live in Wisconsin (zone 5) I dug up my cannas in the fall and stored them in my basement. When should I plant them in a pot so they will be ready to plant outdoors in the spring?
If you wish, pot up the tubers 6-8 weeks before your frost-free date.
Hello! I am attempting to grow canna lillies from seeds. This is what I have so far. Can you please guide me in the right direction? Should I leave them in the water? Do they need to go in soil? Any and all help is appreciated. Thank you for your time!
This article will help you.
https://www.gardeningknowhow.com/ornamental/bulbs/canna/planting-canna-lily-seeds.htm
Canna is perennial is zones 7-11 meaning you don't have to dig them up and store them over winter. https://www.gardeningknowhow.com/ornamental/bulbs/canna/canna-lily-care.htm
back? If not, should I dig them up now in the hopes that they may come back next year or they a loss?
Canna lilies have tender tubers. In temperatures below 40 degrees F., they need to be dug up.
You could do a test dig and see if they are mushy or still looking healthy.
https://www.gardeningknowhow.com/ornamental/bulbs/canna/storing-canna-bulbs.htm
Why does my Canna lily curl up in Sun? When taken out of sun goes back to normal
Although these can handle full sun, they (like many plants) won't be able to tolerate quickly changing conditions. You must get them acclimated to the sun.
Start by putting them out for a few hours per day, until they don't react as much. Then you can start leaving them out until the cold weather returns. Then you will need to bring them in again.
This article will give you more information their care: https://www.gardeningknowhow.com/ornamental/bulbs/canna/canna-lily-care.htm