Latest after the first frost, the tubers (bulbs) of Canna need to come off the ground so they have a chance to survive the winter. Cut the green six inches above the ground and dig out the rhizomes (rootstock). Then allow to dry and put them headfirst into dry sand. The same is true for Dahlia and Gladiolus tubers.
The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.