The term " canker" is used to describe a killed area or blister on the bark, a branch or the trunk of an infected tree. The Morton Arboretum describes it as a canker that is "usually oval to ...

How should I treat my tree? It is best for us to have a sample in hand and more information about the site to accurately identify the pest on your maple and suggest what treatment steps to take.

Anne Schmidt, OSU Extension Master Gardener Coral bark maple ... pictures of the tree and the open wound left by the broken branch. Is there any hope for the tree? What is the treatment for ...

For their experiment, the seven students in Grade 11 and Grade 12 took samples of nectria canker from American beech, white birch and sugar maple trees in Sir Sandford Fleming Park in Halifax.