My dwarf Fuji apple tree has few leaves on it this year. I live in Oakland CA, (I actually live in Fruitvale, aptly named).
The tree is producing fruit, is about 7 feet tall and has maybe 20 apples on it. Some of the branches have no leaves while other have a bushel of leave at the end. The tree seems healthy but I'm worried about the lack of leaves and growth. What should I check for? Attached are some photos.