What's wrong with my Avocado Tree
Four years ago we planted an Avocado tree (I think it is a Haas). The first year it grew nicely producing no fruit. The second year all of the leaves turned dark and fell off the tree in the summer again producing no fruit. The next summer I wised up and water the tree much more often. The leaves stayed on the tree and it produced a ton of buds, but all of the buds fell off before they grew into anything. You basically could shake the branch lightly and they fell. Last year the same thing happened, but it looked like a few buds started to turn into fruit, but then they fell off when they were tiny. This year it looks like the same thing!
Why are the buds falling off? Should I prune the tree so it does not have some many branches/leaves/buds to try and feed? The tree is about 4-5 feet tall and has branches from the ground up.
Please help... Thanks!