Oak wilt - Bretziella fagacearum (previously known as Ceratocystis fagacearum)
Oak wilt is caused by the fungus Bretziella fagacearum which develops in the outer sapwood of the tree. The infected tree reacts by developing tyloses and gums which subsequently restrict the flow of water and nutrients in affected vascular tissues with the result that the tree wilts and subsequently dies.
If you think you have found a plant pest, report it to the Canadian Food Inspection Agency.
What information is available
Policy directives
- D-08-04: Plant protection import requirements for plants and plant parts for planting
- D-01-12: Phytosanitary Requirements for the Importation and Domestic Movement of Firewood
- D-99-03: Phytosanitary Measures to Prevent the Entry of Oak Wilt Disease (Ceratocystis fagacearum (Bretz) Hunt) from the Continental United States
- D-98-08: Entry Requirements for Wood Packaging Material into Canada
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