The oak trees have erroneously been named "Summer Cherry Tree" in the Plants folder. When you grow one, it's terribly deformed, too, so you need to elongate it vertically until it begins to look right. The misnamed oaks also have the wrong materials on them. I stuck on some modified Plum leaves (in the future, I'll have some decent oak leaf material to use), and I replaced the cherry bark with a spiced-up image map. (Made it a wee bit darker than it should be, but you get the idea.) So peek into the Vue 4 Plants, and you'll see 'em there! Oh, and if you don't do any changes to 'em, they also double quite well as cherry trees. ;)