Ornamental Plum: Armillaria root rot Categories: Ornamental Plum Ornamental Plum Diseases Ornamental trees Ornamentals Last review date: 2025-06-29 08:33 Last edit date: 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 […]
Ornamental Plum: Brown rot Categories: Ornamental Plum Ornamental Plum Diseases Ornamental trees Ornamentals Last review date: 2026-08-28 02:15 Last edit date: Brown rot blossom infection Photo by: R.S. Byther Biology Brown rot is a fungal disease which initially infects the flowers. The petals turn light brown, develop water-soaked spots and may have tan or grayish […]
Ornamental Plum: Crown gall Categories: Ornamental Plum Ornamental Plum Diseases Ornamental trees Ornamentals Last review date: 2025-06-29 10:33 Last edit date: Large gall on crown Photo by: R.S. Byther Biology Crown gall is a bacterial infection that can attack through wounds to the lower trunk, crown, or larger roots. Susceptible plants first develop soft warty […]
Ornamental Plum: Cytospora canker Categories: Ornamental Plum Ornamental Plum Diseases Ornamental trees Ornamentals Last review date: 2025-06-29 10:34 Last edit date: Cytospora-infected peach twigs Photo by: R.S. Byther Biology Cytospora canker infects the bark and cambium (the growing layer beneath the bark) and may be found in the outer layers of wood. Cuts into newly […]
Ornamental Plum: Plum pockets Categories: Ornamental Plum Ornamental Plum Diseases Ornamental trees Ornamentals Last review date: 2025-06-29 10:35 Last edit date: Plum pocket infected fruit Photo by: R.S. Byther Biology Plum pockets is caused by a fungal infection of the leaves, twigs, and small branches. The fungus overwinters on twigs or bud scales. Infection occurs […]
Ornamental Plum: Shothole (Coryneum blight) Categories: Ornamental Plum Ornamental Plum Diseases Ornamental trees Ornamentals Last review date: 2026-08-28 02:15 Last edit date: Coryneum blight symptoms on leaves and fruit Photo by: R.S. Byther Biology Coryneum blight is a fungal disease. Lesions on leaves are initially small, purplish, round to oval areas which expand into brown […]
Ornamental Plum: Silver leaf Categories: Ornamental Plum Ornamental Plum Diseases Ornamental trees Ornamentals Last review date: 2025-06-29 10:40 Last edit date: Silver leaf symptoms on leaves Photo by: R.S. Byther Biology Silver leaf is a fungal disease which attacks the shoots, branches, trunk, and roots. The fungus is usually a saprophyte living on dead plant […]
Ornamental Plum: Viruses Categories: Ornamental Plum Ornamental Plum Diseases Ornamental trees Ornamentals Last review date: 2025-06-29 10:42 Last edit date: Virus infection causing poor growth on branches Photo by: R.S. Byther Biology Virus diseases in prunes and plums cause many variable symptoms depending on the virus strain and the cultivar affected. For instance, tomato ringspot […]