Crabapple: Powdery mildew categories: Crabapple Crabapple Diseases Ornamental trees Ornamentals revision date: 2022-11-21 03:55 Powdery mildew on apple leavesPhoto by: R.S. Byther Biology Powdery mildew of crabapple is typically seen on the foliage, but may also occur on twigs, blossoms, and fruit. Characteristic patches of white, powdery fungus develop on the leaves and terminal shoots. […]
Crabapple: Scab categories: Crabapple Crabapple Diseases Ornamental trees Ornamentals revision date: 2022-11-21 03:46 Apple scab on leaves and young fruitPhoto by: R.S. Byther Biology Scab of crabapples is caused by the same fungus which causes scab on apple and hawthorn. The disease infects during wet weather in the spring and initially causes small, pale, watersoaked […]
Crabapple: Stem rot categories: Crabapple Crabapple Diseases Ornamental trees Ornamentals revision date: 2022-11-21 02:02 Crabapple stem rot: rotten stem has a dark blotchPhoto by: R.P. Regan Biology Stem rot of crabapple is caused by a soil-borne fungus. This disease is most prevalent in the winter on nursery stock. The fungus infects through wounds on the […]