Peach trees are used in the yard for both decoration and for their fruit production. Some peach trees may require the grafting of an extra limb from a healthy peach tree to increase fruit production or to repair damage from a storm or disease. Grafting is a method of attaching a limb from a healthy, mature parent plant onto a donor tree to propagate healthy fruit or to crossbreed different varieties of trees. The cleft graft is a simple method of adding limbs to a peach tree. Some peach trees are more likely to graft than others, so knowing the varieties of your trees will help you determine whether a graft is possible.
Cut a scion, or branch, from a healthy peach tree using a sharp pair of pruning shears. Cut a branch that has at least a year's growth, which is 12 inches in length, cutting 1 inch below the lowest bud. Collect the scion in winter while the tree is dormant.
Clip the leaves of the scion and wrap it in a wet paper towel and place into the refrigerator to keep it dormant.
Graft the scion to the donor tree during the spring. Create a small crack in the trunk of the donor plant trunk using a chisel, at least 6 inches above a healthy branch, and insert the scion into the hole.
Attach the scion to the tree with grafting tape so that it is tied securely onto the tree. Cover the wound with grafting tar to adhere the branch in place and prevent infection.
Remove any shoot growths from the area of the graft to prevent failure of the attachment. Cut the binding after three weeks to prevent it from getting too tight.