Dogwood: Brown soft scale categories: Dogwood Dogwood Insects Ornamental trees Ornamentals revision date: 2024-04-08 11:46 Brown soft scalesPhoto by: R.S. Byther Biology Brown soft scales are yellowish to dark brown (adults are usually darker). They are found mainly on twigs, although young scales may also be found on foliage. They overwinter as immatures on host. […]
Dogwood: Lecanium scale categories: Dogwood Dogwood Insects Ornamental trees Ornamentals revision date: 2024-04-08 11:46 Lecanium scales on twigPhoto by: R.S. Byther Biology Lecanium scales are rounded brown (or mottled) insects. Adults are from 1/8″ to 1/4″ in diameter. Lecanium scales produce large amounts of sticky honeydew, which may have sooty mold growing on it. They […]
Dogwood: Anthracnose categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals revision date: 2022-11-22 12:04 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 large […]
Dogwood: Armillaria root rot categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals revision date: 2022-11-22 11:52 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 flooded. […]
Dogwood: Collar rot categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals revision date: 2022-11-22 11:49 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 soil […]
Dogwood: Leaf scorch and leaf roll categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals revision date: 2022-11-22 11:46 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 rolling […]
Dogwood: Powdery mildew categories: Dogwood Dogwood Diseases Ornamental trees Ornamentals revision date: 2022-11-22 11:41 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. White, […]
Dogwood: Oystershell scale categories: Dogwood Dogwood Insects Ornamental trees Ornamentals revision date: 2023-04-04 12:00 Severe oystershell scale infestation on twigPhoto by: Unknown Biology Oystershell scale insects are usually found on trunks, branches, and twigs. They occur less frequently on the leaves and other plant parts. The mature scale is approximately 1/8″ long, brownish or gray […]