What is it?
Oak wilt, is a fungal disease caused by the bacteria Bretziella fagacearum. The fungus is typically spread by insects that are attracted to the sap from fresh wounds or pruning cuts, but can also spread through the root systems of infected trees to non infected trees. The disease infects the xylem of Quercus species, inhibiting the trees ability to transport water and nutrients, causing discoloration, defoliation, and eventual decline of the tree.
What Should you do?
The best practice to stop the spread of Oak wilt is to only prune oak trees between November to mid March. Another way the general public can help is to only use firewood that is from the area and never transport firewood long distances.
If you suspect your Oak Tree may be affected, have one of our ISA Certified Arborist visit to confirm and provide next steps. Secondly, report the diagnosis to the Invasive Species Centre.
More information can be found here.
Download Fact Sheet from Invasive Species Centre Above