P. ramorum symptoms on Rhododendron
Phytophthora ramorum, the pathogen which causes sudden oak death, causes leaf spots on shrubs such as rhododendrons.
Photographer(s): Joseph O'Brien, USDA Forest Service
Copyright: www.ForestryImages.org
Phytophthora ramorum, the pathogen which causes sudden oak death, causes leaf spots on shrubs such as rhododendrons.
Photographer(s): Joseph O'Brien, USDA Forest Service
Copyright: www.ForestryImages.org