Hey, is there anything I could do for leaf scars turning black on a grafted maple scion or will they heal over? Last week around the 4th of July I took a greenstick cutting off a Silver Maple that is my brother's yard and I grafted it onto another Silver Maple seedling about the same thickness using the whip and toungue methos. I tore the leaves off the scion when I took the scion and then wrapped it with parafilm tape. The graft has taken and the buds on the scion look to be swelling a little. But the leaf scars are now turning black. Will they heal over or is the scion a goner? Thanks.