I have just made this mod for new updates on Snow mod: http://minetest.net/forum/viewtopic.php?id=2290
It is for differant kinds of trees, leaves and wood! At the moment it does not do anything but it will be easer to add differnt trees to Snow mod.
Downloads:
1.0: http://ubuntuone.com/6LrsDCHYNIAjGvHTRtZSuD
Licences:
All items on this mod is under GPL V2 licence