Plumpox virus is usually spread by aphids, but it can also be spread by grafting infected plants, including peaches and cherry blossoms. Once a tree is infested, no treatment is required and the tree should be removed to prevent further infestation of neighboring plants. Symptoms include . Although not technically a disease, Curculio plums are a common problem in plum trees. The pests of this beetle and its larvae destroy these fruit trees, causing a lot of fruit drop and rot. The best way to control these pests is to spray the trees with appropriate insecticides. Owners can use a variety of control methods. Properly planting disease-resistant varieties may be an option to solve the plum problem. For the new garden, find out which variety best suits your area. Your local expansion agent is a good source of this information.Do not plant new plums near old and diseased trees. It is worth checking the correct cutting of diseased branches.