QuestionsHow to growFlowersBorder Perennial FlowersWill it ever return? 0 Vote Up Vote Down mark cordner asked 15 years ago I had two phormiums that both looked frazzled by the cold of winter. i phoned my local garden centre who told me to cut them back to ground level. i have done so but am worried what the outcome will be and how long to rejuvenate?? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago Phormium might well be killed outright. Just wait until spring growth begins in earnest and if nothing happens, they are dead.