Card description - Oak wilt has been confirmed in Canada
Oak wilt has been confirmed in Canada
What to look for
- Dull green, brown or yellow leaves – premature leaf discoloration beginning on leaf tip and moving in towards leaf centre (photo credit: Nicole Mielewczyk, Canadian Food Inspection Agency).
- Cracks in the trunk of dead trees (photo credit: Joseph O'Brien, USDA Forest Service, Bugwood.org),
- White, grey or black fungus under bark surface of dead trees (photo credit: Nicole Mielewczyk, Canadian Food Inspection Agency).
- Early and sudden leaf drop beginning at the crown of the tree (photo credit: William M. Ciesla, Forest Health Management International, Bugwood.org).
What you can do
- Don't prune oak trees between April and November
- Don't move firewood
- Check oak trees for signs of oak wilt
- Prevent the spread: oak wilt can kill an oak tree in a single season. If you see signs and symptoms of this disease, contact the Canadian Food Inspection Agency immediately.
Learn more about oak wilt.