If you know anything about fruit trees then I would really appreciate your help to solve my pest problem:
Every year for the last 4 years, my Cooking Apple Tree has been afflicted with the same pest. Sometimes we get one or two apples growing but they don’t get to a good size and drop off before they are ready.
The Conference Pear Tree on the same wall is thriving and we are expecting a huge crop against next year.
Both our trees are espalier and cut back at the end of each season. We have also tried leaving out apple until the spring before cutting back, but it made no difference.
Any help or insight would be gratefully received.