I have a severe case of leaf spotting on several photinia bushes. It is actually a common bush with immature red leaves, turning green later seen all around Vancouver. The leaf spotting is a fungus. Last year year it lost all leaves. Does anyone know of a fungicide that will address this problem? Lou Lubensky
Photinia leaf spot Go to this link for a discussion of this problem and management strategies: http://msucares.com/newsletters/pests/infobytes/19980324.htm This will give you a good handle on the problem and then you can consult your local nursery with respect to their products. Photinia leaf spot is delt with in depth! Plants should be encouraged to use their own defense mechanisms in order to remain healthy, and chemical intervention is a last resort open to you. This fungal leaf spot is endemic to the lower mainland and may not go away as you may wish. So to question if you want to grow this species is up for grabs.