Oak wilt syndrome, or dry top disease, is caused by the fungi Phytophthora ramorum and Phytophthora kernoviae and is a serious disease that can lead to massive dieback of oaks. These fungi are known for their ability to cause disease in a variety of plant species, but oaks are particularly vulnerable.
These fungi are usually spread through water, which can carry fungal spores from one plant to another. Signs of infection include wilting and dying leaves, branches and trunks, as well as root rot. If the infection is not detected and eliminated in time, it can lead to massive oak dieback, as in some parts of the UK and Ireland.
To combat this disease
measures such as restricting the movement of plants and soil, collecting and destroying infected plants, pruning infected branches and trunks, and using chemicals and biologicals to eliminate the infestation are being implemented. However, to date, the treatment of this disease is difficult and often ineffective when detected late, so it is important to ensure prevention and prevent the spread of infection.
Given that oak wilt syndrome may show no visible signs of infection, or may be very difficult to spot in the early stages of infection, it is recommended to regularly check the condition of the plants. If you notice yellowed needles or leaves, you should contact a specialist. Timely and proper treatment is an important step in maintaining plant health and their further development. With proper care of infected plants, they can continue to delight with their green leaves and aroma for many years.