Preparing cannas for bulb storage
I've followed your instructions for preparing the bulbs for storage (i.e., removing the canna bulbs, cutting back the foliage, dividing them, washing them). I have placed them in a closet to cure them, but you do not mention if the roots that are "dangling" from the bulbs should be removed. Also, after curing, when wrapping in newspaper to store for the winter, should they be individually wrapped or may I wrap several together?
Small dangling roots can be left on. If there are so many roots they won't fit in your container, they can be trimmed off, but don't damage the main bulb. The bulbs should be individually wrapped to promote air flow and prevent rotting.