Requires Unity 3.3.0 or higher.
This package contains a set of 9 fully editable European birch trees which are ready to use in your project, but can be tweaked and reshaped using Unity’s tree creator.
Update
Next to the 4 birches of version 1 i have added 5 completely new silver birches – well known for their drooping branches and leaves and their pretty white bark – shipping with their own leave and bark textures.