Peach trees have been growing for four years, so it's time to enter the shelf life. At this time, it is the best operation period to change the head by high grafting. Generally, peach trees need to be deworming after changing their heads, and because of the large growth of new shoots when changing heads by high grafting, they need 1 summer pruning every half month. Only by doing these two things well can peach trees stay healthy without any symptoms.