overwintering non hardy plants
I would like to know if Oleanders or other non hardy shrubs can be overwintered in the same way as we protect fig trees here in North NJ?
My neighbor wraps his in burlap or a painters cloth each Fall after leaves have dropped and then makes a cocoon around the fig tree. He fills the inside with stray/ hay and carefully seals it up, then places a plastic tub on top as a cap.
In the late Spring he unwraps it and sometimes the tree sprouts leaves from existing branches other years it comes up new from the roots
Thanks from NJ