Nursery Stock in too-tall Pot, Roots too brittle; Graft?
Ok so I have a couple of nursery-stock trees assorted and I want to repot them in a few months to bonsai pots. Their is a good chance of death if I try and force the brittle roots to fit in such a thin (depth) pot. I've read about grafting, and hear you can graft roots too. How exactly does this work? Must the tree be dormant at the time? What about evergreen? Do you just pull out the plant tie the two root securely and then immediately cover it with soil again and stick it back? Or expose the graft bareroot for a few days in a bucket of water? If you graft roots, then before they heal, the plant essentially lost all the roots you removed before to graft,how does this not kill the tree? Is their a rule of thumb, like never disable more than 50% of the root-stock with a graft?