Sun scald is not a disease, but damage caused to apples and many other fruit, caused by high temperatures and strong sunlight in summer. Typically, sun scald damage appear on sun-exposed side, which is usually towards the direction of the midday to afternoon sun. The […]
Crown gall is a bacterial disease caused by Agrobacterium tumefaciens (syn. Rhizobium radiobacter), which produces tumour-like swellings on the bark of trees and plants. It can infect a wide range of dicotyledonous (broad-leaved) plants, particularly members of the Rosaceae (rose) family such as roses, raspberries, […]
Apple tree branches covered in patches of white, woolly fuzz? What you’re seeing is a woolly aphid infestation. These pests can be controlled by spraying a few applications of horticultural oil spray (preferably a natural oil-based product rather than a petroleum oil based one) 7 […]
