Dogwood: Anthracnose Categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals Last review date: 2026-07-30 09:43 Dogwood anthracnose on leaves Photo 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 […]
Dogwood: Armillaria root rot Categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals Last review date: 2026-04-25 10:42 White fungal mat of Armillaria root rot infecting trunk Photo 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 […]
Dogwood: Collar rot Categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals Last review date: 2026-04-25 11:07 Phytophthora root rot infecting trunk Photo 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 […]
Dogwood: Leaf scorch and leaf roll Categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals Last review date: 2026-04-25 11:14 Dogwood leaf scorch Photo 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 […]
Dogwood: Powdery mildew Categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals Last review date: 2026-04-26 10:22 Powdery mildew on dogwood leaf Photo 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 […]