Posted: 07/11/2015 at 18:01
I grow a lot of cannas and they mostly stay in the ground without protection. however some protection is advisable. Keeping them dry is best.......a few upturned pots with plastic draped over them will help.
if you have a gh I would lift them and, making sure they are dry, would wrap in fleece or pot them into pots using dry compost. They will then "start" early.....essential for early flowering.....