by Paige Thrush, Nancy J. Taylor & Francesca Peduto Hand
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Summary:
Species of the fungus Botryosphaeria are stem and branch pathogens, causing cankers and dieback on many species of woody trees and shrubs. The species Botryosphaeria stevensii is responsible for canker and dieback of juniper. Junipers, or Juniperus species, are extensively planted landscape ornamentals with a wide range of susceptibility and resistance to this disease. The disease reduces the vigor and aesthetic quality of ornamental trees and shrubs in the landscape and may cause significant damage to young seedlings, grafts, and transplants in nurseries.