Dogwood: Anthracnose categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals last review date: 2025-10-15 11:05 Dogwood anthracnose on leavesPhoto by: R.S. Byther Biology Dogwood anthracnose is a fungal disease of leaves and twigs. It is found mainly on the native dogwoods, especially Pacific dogwood, but can also infect some ornamental dogwoods. The leaves display small to […]
Dogwood: Armillaria root rot categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals last review date: 2025-07-11 03:18 White fungal mat of Armillaria root rot infecting trunkPhoto by: C.R. Foss Biology Armillaria root rot is a fungal disease transmitted between plants by root contact. Armillaria is often found in newly cleared soils or ones which have been […]
Dogwood: Collar rot categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals last review date: 2025-07-11 03:23 Phytophthora root rot infecting trunkPhoto by: R.S. Byther Biology Collar rot is caused by a soilborne fungus which usually infects the plant through wounds on the trunk. It can also infect roots. A canker develops on the trunk near the […]
Dogwood: Leaf scorch and leaf roll categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals last review date: 2025-07-11 03:28 Dogwood leaf scorchPhoto by: R.S. Byther Biology Leaf scorch and leaf roll are results of stress. Leaf scorch is characterized by browning of the tips and margins of the leaves. Leaf roll is a puckering and upward […]
Dogwood: Powdery mildew categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals last review date: 2025-07-11 03:36 Powdery mildew on dogwood leafPhoto by: J. Chushcoff Biology Dogwood powdery mildew is caused by a fungus. It infects leaves, current-year twigs, blossoms, fruit, and buds. The first symptom is often yellow patchy areas on a leaf that become necrotic. […]