Here's my take on a white cedar (or thuja) tree, two of them to be precise, obviously made with sapling. Fairly high poly, I set "Display" under "Object" settings to "Bounds" so that Blender won't crash on those with older machines when opening the .blend. Trunk is not textured, in my scene it was a background object so I didn't need to texture it. The leaves texture is self made, for the leaves material props go to user negativa (http://blenderartists.org/forum/showthread.php?216866-Cycles-tests-the-new-blender-CPU-GPU-renderer-of-awesomeness&p=2138175&viewfull=1#post2138175).
Use the trees or the texture for whatever you'd like to.