“What is the matter with my Boxwood?” Lesley and I have been asked this question much too often in the last few years. Boxwood (Buxus sempervrens, microphylla, etc.) have many troubles, for example: Leaf Minors, Leaf Curlers, Spider Mites, Psyllid, Volutella and Phytophora fungal blights, Nematodes, too much water on overhead sprinklers, or too little water, winter damage, frozen soils, heavy soils, Boxwood Decline and most recently, Boxwood Blight. None of these by themselves are the cause of most of the Boxwood dieback. We can go through all kinds of soil and tissue samples, fertilizers, fungicide and insecticide sprays and still be missing the main cause.