It depends on the severity of the disease or pest infestation. While there are some tree diseases and pests that can be treated with DIY methods, others require the expertise of a professional arborist (tree surgeon). If you suspect that your trees are affected by a disease or pest, the first step is to correctly identify the problem. Misdiagnosis can result in ineffective treatments or even harm to the tree. YHRG Tree Surgeons can assist with identification and recommend appropriate treatment. For minor issues, such as small-scale pest infestations, DIY treatments may be effective. These can include methods such as pruning affected branches or using insecticidal soaps or oils. However, for more severe problems, such as widespread disease or pest infestations, it is best to hire a professional tree surgeon. Professional tree surgeons have access to specialised tools, treatments, and techniques that are not available to homeowners. They also have the training and expertise to properly diagnose and treat tree diseases and pests. In addition, they can provide advice on preventive measures to reduce the risk of future infestations or diseases. It is important to act quickly when dealing with tree diseases and pests, as they can spread rapidly and cause irreparable damage to the tree. If you are unsure of how to handle a tree disease or pest infestation, it is best to consult with a professional tree surgeon.