I put in the second blueberry bush yesterday. Before I put it in, it had been sitting by the garage in the shade -- today it looked at me as if to say, "what is going on here?!?" so I put shade cloth over it like I had already done for the first one.
A friend of mine is putting ice around her plants at night and watering in the morning to keep them alive, so I've started doing that for these blueberries. We'll see what happens.
Is it unusually hot and dry where you are? What are you doing to keep your plants alive?