I've looked in the search engine and found four threads on the subject of canker. No luck. Problem, A customer of mine has about twenty to twenty-five japanese boxwoods. One of which has canker...i think. The plant has a spot near the bottom on the sidewalk side of the plant. The spot is around 10 inches in diameter and there is not a leaf in this area...branches are dead. There is another spot near some yews that has two branches with brown leaves on it. This is the only one in his landscape with the problem. Question, Does this sound like a form of canker and if it is... what do I do. Thanx for any input.