Update. Yesterday the top few leaves looked wilted again but i did not water and we no rain overnight. This morning was nice and cool and what do you know it had fully recovered. I've seen other planters do the same thing but never put 2 and 2 together on this. It was only a small defense mechanism against direct sun and some wind.
When i checked the dirt yesterday all of it was evenly moist and cool to the touch and had hard time telling between original dirt and root ball. So i would say the mystery is solved and i have nothing to worry about.
If our normal hot and humid summer ever kicks in i may have to give it some tlc but until then it should be almost maintenance free. Thanks everyone for your input. This one will not be dug up. First new shrub in a long time and i am loving it.
