Grafting is one of the important means of asexual reproduction of flowers and trees. There are many kinds of grafting, and the following are commonly used in flowers: 1. Bud grafting: It is a common method in some flowers and trees. It can be divided into shield bud grafting and embedded bud grafting. Shield bud grafting is also called "T" bud grafting: this method is the most widely used, simple to operate and high in survival rate. Select annual branches as scions, cut them into shield shapes from bottom to top, with a little xylem to make the buds have petioles in the middle. Select the smooth part of the rhizome near the ground, cut it into a "T" shape, and then pick up the skins on both sides of the incision with a knife. Insert the cut bud into the incision, close it, tie it tightly with plastic tape, and pay attention to exposing the petiole. 10 days or so, the petiole falls at the touch, which is a symbol of survival. Grafting: the characteristic of grafting is that it does not need to be carried out when the rootstock is peeled. Buds are taken from annual branches. When they are taken out, they are cut from top to bottom, reach the xylem, and then cut at the lower part of the bud with a knife to take them out. The rootstock is also cut into sections with the same size as the scion from top to bottom, and the lower part is cross-cut, then the buds are embedded in it and tied tightly with plastic tape to expose the petiole. 2. Branch grafting: Branch grafting can be divided into cutting grafting, splitting grafting, docking and root grafting. Cutting: cut the rootstock 5 ~ 6 cm from the ground, and then cut a gap vertically from the slightly xylem on one side, about 3 cm long. One side of the scion is cut to the vertical plane of xylem, which is the same length as the gap of the rootstock, and the other side is cut with a small inclined plane, which is about 1 cm long. Immediately after cutting, most of the scion is inserted into the incision of the rootstock, so that the two layers are aligned, and then knotted, and wax or soil is coated on the joint. Usually in hibernation. Split: Cut the rootstock at an appropriate height and split it vertically downward. Cut the lower end of the scion into a wedge shape, pry open the incision of the rootstock with a cleaver, insert the scion, and align and bind the cambium on one side of the scion. Because the rootstock is thick, 1 ~ 4 scions can be grafted at the same time, but the more scions, the bigger the wound, and the more difficult it is to heal. Docking: it is often used for other varieties that are not easy to graft, such as osmanthus fragrans and Prynne. For branches with similar rhizomes and ear diameters, cut an equal-length incision (about 1/2 of stem diameter) to make them closely combined (if the thickness is different, make a cambium align). After healing, cut off the upper part of the rootstock and the lower part of the scion. Roots grafting: Roots are used as rootstocks, which can be cut, split and grafted during dormancy. Suitable for peony, rose, etc.

The advantages of grafting are: the plants grow and form quickly, and the excellent characteristics of the varieties can be maintained.