Ornamental Pear: Fire blight categories: Ornamental Pear Ornamental Pear Diseases Ornamental trees Ornamentals last review date: 2025-06-29 10:59 Biology Fire blight is a bacterial infection which typically attacks via wounds or blossoms. Initially, twigs and flowers appear water soaked. Infected tissues quickly turn brown to black and die back, often bending over in a characteristic […]
Ornamental Pear: Pear trellis rust categories: Ornamental Pear Ornamental Pear Diseases Ornamental trees Ornamentals last review date: 2025-06-29 11:27 Upper and lower leaf surface on Pyrus sp.Photo by: F. Geller-Grimm, commons.wikimedia.org Biology Pear trellis rust is a fungal disease that attacks pear trees and junipers. It is commonly reported on pear leaves in western Washington. […]
Ornamental Pear: Powdery mildew categories: Ornamental Pear Ornamental Pear Diseases Ornamental trees Ornamentals last review date: 2025-06-29 11:07 Powdery mildew on apple leavesPhoto by: R.S. Byther Biology Powdery mildew is a fungal disease found on twigs, leaves, blossoms, and fruit. New growth is particularly susceptible. The entire terminal may become covered with powdery mildew. Leaves […]
Ornamental Pear: Pseudomonas blossom blast and dieback categories: Ornamental Pear Ornamental Pear Diseases Ornamental trees Ornamentals last review date: 2025-06-29 11:36 Pseudomonas cankers on pear twigsPhoto by: R.S. Byther Biology Blossom blast and dieback is caused by a bacterial infection. The infection causes buds to turn a papery brown and die. Leaves may be spotted. […]