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. […]
Ornamental Pear: Aphids categories: Ornamental Pear Ornamental Pear Insects Ornamental trees Ornamentals last review date: 2025-12-03 10:06 Green peach aphid closeupPhoto by: Unknown Biology Three aphids are commonly found infesting pear. All three species produce honeydew, a sweet, sticky material which attracts ants and that may become covered with a growth of dark sooty mold. […]
Ornamental Pear: Codling moth categories: Ornamental Pear Ornamental Pear Insects Ornamental trees Ornamentals last review date: 2025-06-29 11:59 Codling moth feeding inside apple corePhoto by: J.F. Brunner Biology The brownish-gray wings of adult codling moths are marked with dark bands and a dark brown spot near the tip. Wingspan is up to 3/4″ across. Adult […]
Ornamental Pear: Pear slug (pear sawfly) categories: Ornamental Pear Ornamental Pear Insects Ornamental trees Ornamentals last review date: 2025-06-29 12:00 Pear slug and damaged leaf from feedingPhoto by: R.D. Akre Biology The pear sawfly is also known as the pear slug (or ‘cherry slug’ when on cherry) because of its resemblance to a small, dark […]
Ornamental Pear: Pearleaf blister mite categories: Ornamental Pear Ornamental Pear Insects Ornamental trees Ornamentals last review date: 2025-12-03 10:06 Pearleaf blister mite damagePhoto by: C.R. Foss Biology Pearleaf blister mites are tiny, white to yellowish eriophyid mites that feed on leaves and fruit. Damage on leaves is caused by mites feeding inside the leaf tissues, […]