Alan Buckingham, author of Allotment Month By Month, advises in his book that gardeners should inspect their apple and pear trees for signs of canker and remove any infected wood immediately.

Pruning woody plants: Red- and yellow-twig dogwood and shrub willows are prone to canker diseases that infect the branches, causing discolored sunken areas in the bark while ninebark and lilac shrubs ...

Thousand cankers disease (TCD) of walnut has been detected in Maryland ... The disease caused by a fungus and carried by the very small walnut twig beetle may be fatal to mature walnut trees in our ...