Mine like shade. In the heat of the summer they seemed very stressed but did better when I added some shade. They also like a lot of water. Don't let their feet get dry.
It's difficult to tell from the pictures, but it looks like a sycamore to me. Does the bark get lighter as you look up the tree? Maybe even some white patches up high in the branches?
http://www.hiddenspringsnursery.com/plants.html I've had very good success with these folks. Very reasonable prices and good customer service. They have many varieties that are listed in the various Food Forest books- Edible Forest Gardens/ Gaia's Garden. I planted almost one or two of everything in their catalog and had 100% success this year! They are a little further south (Tennessee) but may be the same zone as you or at least close to yours.
