There are many different diseases that affect landscape trees and shrubs. Control of tree and shrub diseases cannot be properly accomplished until the disease pest is identified. Identification of tree and shrub diseases is crucial because, although most diseases can be controlled, there are some diseases that cannot be controlled.
Disease control on landscape trees and shrubs can sometimes be accomplished by more than one method, depending on the particular disease that if infecting your landscape plants. Fungicides are often used to control diseases on landscape trees and shrubs and fungicides may be sprayed, injected into the tree trunk, or even injected into the soil surrounding the roots of the tree or shrub. In other cases cultural changes, such as tree pruning, tree fertilization, or altering watering habits, may reduce disease infection on landscape trees and shrubs.
Even if you are going to attempt to control a disease that is infecting your landscape trees or shrubs you should consider consulting a local arborist. The arborist can identify the disease and advise you if there are treatments available to control the disease and the proper time to apply the disease control treatments.