This was my first fully working tree model for Torque 3D, build all by hand in blender, it has collision, wind emitter and billboards-lod set up.
I made 3 variations as you can see in the middle of the picture, they are not very detailed, but instead they have very low poly count of around 250-350.
Unzip the "torque" folder in your torque project folder and it should work from there, alternatively you can use the blend files if you want to do something other with it, or the collada importer does not work properly.
You can easily change the textures to make it look like something other, the trees are quite average for example the first one makes a good conifer-like tree with other textures.
Textures based on public domain images from burningwell.org.
They have diffuse, normal and specular maps in dds-file-format.