A couple of examples:
http://4.bp.blogspot.com/_rB-G-WeWgJI/SZe2LxdfVAI/AAAAAAAAGYU/I7Ej4IcViaI/s400/LovedAppleTree.jpg
http://mahschocolate.files.wordpress.com/2008/10/apple-tree.jpg
I also did some other Googling and found that Speedtree 4.2 has a "red delicious apple tree" in its library, in case anyone here happens to have access to that program. Makes me wonder why Bethesda didn't use it themselves. I'd be extremely thrilled to have Speedtree versions, but I realize that's probably hoping for too much
If possible, the model should depict apples on the trees.
I've looked at the version of an apple tree that comes with Qarl's Harvest, but that one has some UV mapping issues and is rather low on the detail side. The mod also isn't clear on permission for re-use other than to say "use the ESM as a master" which isn't something I want to do.