I lost all three of my figs to the extreme winter. All three were in protected areas next to walls but I didn't do anything extra to them. All about 5 years old. I pruned them back about 2 months ago. The Celeste and Chicago Hardy have come back and look very healthy. The Brown Turkey did not come back, but just yesterday I was looking at it closely and noticed a lot of green on the exposed roots. When should I give up on this, and is there anything I can do to jog some growth? Thanks