I top worked a few wild apple trees by bark grafting, i used electrical tape and toilet ring wax, and have quite a few that took, how long should i let the electrical tape on before removing it?
With a graft like that you can leave the tape on for most of the growing season if it is a larger tree. You really dont have to even remove it, just cut through it in a couple spots and leave it on the tree. Removing electric tape on younger trees can pull off bark with it.