Posted: 02 December 2011
Overall: My cordyline also suffered this winter and is now a dead stump with new suckers at ground level. My gardening reference book says -
Propagation. Detach suckers in March and April and pot in 4in containers of John Innes potting compost No.2. Grow in a greenhouse at a temp of 10-13oC for 12 months before potting on or planting out.
I shall give it a try next spring, if they weather the winter. I reckon they`ll need some protection/covering in the cold.