| Problem | Publication |

Joseph OBrien, USDA Forest Service, Bugwood.org
| Environmental (Stress) | Stress and Decline in Woody Plants |

Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
| Needle Blight (Dothistroma/Mycosphaerella pini) | Dothistroma Needle Blight of Pine |

Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
| Needle Blight (Stigmina) | Common Diseases of Spruce in Kentucky |

USDA Forest Service - North Central Research Station, USDA Forest Service, Bugwood.org
| Needle Cast (Phytophthora) | Common Diseases of Spruce in Kentucky |

Penn State Department of Plant Pathology & Environmental Microbiology Archives, Penn State University, Bugwood.org
| Root Rot (Phytophthora) | Common Diseases of Spruce in Kentucky |

William Fountain, University of Kentucky, Bugwood.org
| Bagworm | Bagworms on Landscape Plants |

Ward Strong, BC Ministry of Forests, Bugwood.org
| Spider Mite | Spider Mites on Landscape Plants |

Minnesota Department of Natural Resources - FIA, Minnesota Department of Natural Resources, Bugwood.org
| Environmental (Winter Drying) | Leaf Scorch and Winter Drying of Woody Plants |