I received C3 beta the other day and that was one of the first things I looked at. There is quite a variety of stock trees and from what I have seen, you can make your own as well. I must say though that there is a lack if shaders such as bark and leaf textures but that might come with the completed program. I was considering Bryce 5 but since seeing this, I think I'll hold off for a while. Hope this answers your question dave!