I have several wild Muscadine Grapes growing in the forest behind me. They were choking out the trees so I cut them back out of the trees this fall. Question 1) What are the chances of them growing back? Question 2) Can I train them to grow horizontally on wire so that the grapes are reachable by me? Right now they only grow where the birds can get to them. Question 3) How much sun do they need? The forest is less than dappled sun which may explain why they are climbing high into the trees to produce.