Well, um, that's in New Mexico, not New Jersey. Half greyed out leaves in May means the new growth was affected by something.
A couple of notes on mine this spring--it has leafed out well, and on the four or five strong extension shoots from last summer, has budded out particularly strongly. It has also bloomed -- which resemble those stringy blossoms on native pin oak in the woods that are covering my yard now .
A word of caution too. Last week I noticed significant sawdust piles at the foot of the trunk. My tree has a large deadwood patch on the front from losing a significant primary branch a very very long time ago. The remaining wood had weathered to a very attractive cracked silver on the surface, which looked dry. However, that deadwood patch had soaked in all last winter's precipitation drawing it into the interior of the tree--which I discovered going after the carpenter wasps that had take up residence and were producing that sawdust by tunneling. I dug into the deadwood-punky and soggy all the way through the trunk to the other side. It was also pushing rot up into the center of the living trunk.
I cleaned out the soggy wood and the wasps, which left the trunk mostly hollow--which is not all that great for the long-term health of the tree. It is better, however, than leaving the rot to continue. I expect borers now and am on watch.
So, if you have significant old deadwood features that run into the trunk--this could be an issue. That deadwood didn't develop in a humid environment and it is not durable in our climate here in Va. My large Texas live oak is the direct opposite. It has had a huge deadwood feature on its nebari for years. It remains wet or moist all the time. It has never shown any rot at all in the last 22 years. It is native to a wetter climate...