Apple Tree Problems – Sun Scald

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 cells die in the sunburnt area, forming an irregularly shapedContinue reading “Apple Tree Problems – Sun Scald”

Apple Tree Diseases – Crown Gall

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, almonds, cherries, peaches, pears and apples. These disease-causing bacteria liveContinue reading “Apple Tree Diseases – Crown Gall”

Apple Tree Diseases and Planting Location

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 days apart, it suffocates them quite effectively, and gets pastContinue reading “Apple Tree Diseases and Planting Location”