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Pieris japonica, also known as Japanese andromeda, is an economically valuable broadleaf evergreen used in landscapes across the United States. From spring 2010 to 2012, P. japonica 'Mountain Fire' plants growing in Maryland nurseries were observed with a high incidence of stem canker, shoot
An unidentified species of Phytophthora was isolated from irrigation water at a production nursery in Suffolk, VA in 2000 and 2001. Water samples were assayed using a filtration method (3). A similar species was recovered from soil samples collected in two mixed-hardwood forests in Fairfax County in
Phytophthora ramorum, the cause of sudden oak death in California and Oregon coastal forests and ramorum blight in European nurseries and landscapes (1), was detected in six Oregon nurseries in Jackson, Clackamas, and Washington counties from May to June 2003. The pathogen was isolated from: