It is easy to recognise as you will find branches with sunken holes and.
Apple canker occurs more frequently on wet heavy soil with a higher PH, so if you are finding it to be an issue for you, you may require liming or drainage.
Unfortunately, many gardeners choose to prune their apple trees in the fall, which is one of the worst times to prune apples. Apples trees should be pruned in late winter or early spring for best.
Mar 05, Apple trees can be pruned anytime after the leaves have fallen, but it’s best to wait until the extreme cold days of winter have passed but before any new growth has started.
Sub-zero temperatures can cause the cuts not to close correctly, which can lead to black rot.