I'm sorry to say that they may not survive. Best advice? Wait and see when the weather improves, then decide if they're worth keeping, or just need some tlc.

My Cordyline in a massive pot, went to the graveyard three years ago after the freezing weather. I left it because it was very big and difficult for me to deal with. The next summer, new shoots sprung up next to the dead stem. Chuffed!!

Thanks for your input I have a feeling now theyll make it some inner leaves looking healthy