when do I cut back cannas
I am a newbie to cannas, loved them for years, now can grow them in CA. They appear to be done flowering and I don't know what to do next - cut down the stalks, leave thru winter, dig up, etc.
Seems I can leave the rhizomes thru the winter rains, but should I cut the stalks down and if so, how far?
Please help, they were beautiful this year and I don't want to lose them.