Holly leaf blight help

14 Mar 2013

MSc student Stephen Westmore is currently completing a course in Arboriculture and Urban Forestry at Myerscough College, investigating a specific disease of holly trees: Holly Leaf Blight (Phytophthora ilicis).  The disease generally causes leaf dieback and premature leaf-fall, but can also affect young stems. The symptoms, as shown in the image, are dark blotches or areas of leaf necrosis often with a distinctive dark band around the infected area. Similarly on young stems the infection is identified by a ‘blackening’ and necrosis. In hedgerows it can cause an inverted V shape where lower leaves have died.

As this disease has received limited research to date, Stephen is also conducting a survey of industry professionals to gather thoughts and opinions about this particular pathogen.  If you are able to help Stephen with his research by filling in a short survey (which should only take between 5-10 minutes to complete), please contact him at stephenwestmore@googlemail.com.