Ornamental Pear: Fire blight categories: Ornamental Pear Ornamental Pear Diseases Ornamental trees Ornamentals revision date: 2022-12-05 12:00 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 “shepherd’s crook.” […]
Ornamental Pear: Pear trellis rust categories: Ornamental Pear Ornamental Pear Diseases Ornamental trees Ornamentals revision date: 2022-11-28 08:55 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. Like […]
Ornamental Pear: Powdery mildew categories: Ornamental Pear Ornamental Pear Diseases Ornamental trees Ornamentals revision date: 2022-11-27 04:06 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 develop […]
Ornamental Pear: Pseudomonas blossom blast and dieback categories: Ornamental Pear Ornamental Pear Diseases Ornamental trees Ornamentals revision date: 2022-11-27 04:00 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. Flower […]