CAHNRS > Hortsense > Tree Fruits > Tree Fruits (Pear) Tree Fruits (Pear) Diseases Pear: Crown gall Pear: European canker (Nectria canker) Pear: Fire blight Pear: Pacific Coast pear rust Pear: Pear trellis rust Pear: Powdery mildew Pear: Pseudomonas blossom blast and dieback Pear: Scab Pear: Stony pit Pear: Virus diseases Insects Pear: Aphids Pear: Apple-and-thorn skeletonizer Pear: Brown marmorated stink bug Pear: Codling moth Pear: Cutworms and armyworms Pear: Pear psylla Pear: Pear slug (pear sawfly) Pear: Pearleaf blister mite Pear: San Jose scale Pear: Spider mites Tree Fruits Apple Apricot Cherry Filbert Peach Pear Plum/Prune Walnut Diseases Pear: Crown gall Pear: European canker (Nectria canker) Pear: Fire blight Pear: Pacific Coast pear rust Pear: Pear trellis rust Pear: Powdery mildew Pear: Pseudomonas blossom blast and dieback Pear: Scab Pear: Stony pit Pear: Virus diseases Insects Pear: Aphids Pear: Apple-and-thorn skeletonizer Pear: Brown marmorated stink bug Pear: Codling moth Pear: Cutworms and armyworms Pear: Pear psylla Pear: Pear slug (pear sawfly) Pear: Pearleaf blister mite Pear: San Jose scale Pear: Spider mites Tree Fruits Apple Apricot Cherry Filbert Peach Pear Plum/Prune Walnut