By Jackie Carroll Boxwood blight is relatively new plant disease that ruins the appearance of boxwoods and pachysandras. Find out about the prevention and treatment of boxwood blight in this article. What is Boxwood Blight? Boxwood blight is a fungal disease caused by the organism Cylindrocladium buxicola. The organism also goes by the pseudonyms Cylindrocladium pseudonaviculatum or Calonectria pseudonaviculata. The disease is called box blight in the U.K., and you may also hear it referred to as boxwood leaf drop in the U.S. Discovered in the U.K. in the mid-1990s, the disease didn’t make its way to the U.S. until October 2011, where it was detected in a nursery in North Carolina. It has since spread as far north as Massachusetts and can be found in isolated areas across the U.S. Boxwood blight symptoms are similar to the symptoms of other diseases that infect boxwoods. The first sign is round, brown
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