Live Oak Losing Leaves
I live in Houston and we have been in a severe drought. I have been watering my lawn and trees on a routine basis, however, I have noticed that two of my live oaks are losing leaves at the top of each tree. The trees are very young, as the house was built about 3 years ago. The trees had been doing fine but now the trees look bald on top while all leaves are still green and look healthy on the bottom. I did not fertilize the trees this year. Should I have? Am I over watering? Underwatering? Because we haven't had any rain, the ground is very hard and I am afraid that maybe the water is not penetrating the earth and going to where it needs to go. Please help!