When we bought our house 35 years ago, there was a productive orange tree already here. Since then, it's gone through many cycles but its always been fairly consistent. Last year we had one of the best crops ever of large, juicy, sweet and flavorful fruit. However, our Christmas crop that was due in December remains on the tree, the fruit is small, sour and not particularly flavorful. Our watering, fertilizing and trimming schedule remains the same and yet we have a dramatic difference in our crop and the fruit is inedible. It kind of reminds me of a good child that has suddenly gone bad. Where did we go wrong?