SpeedTree Unity Subscription v7.1.4 | 123 MB
With the full release of Unity 5, you can have AAA tree editing tools by subscribing to the SpeedTree Modeler.
Note: You must have Unity 5 Beta (not alpha) to use SpeedTree with the engine. Trees and plants created with the SpeedTree Modeler will not work with Unity 4 or any other pre-5 Unity release, and will not work with Unity 5 alpha.
Highlights of SpeedTree for Unity 5 Beta:
Scalable wind effects, including Wind Wizard
Seamless LOD tuning
Create unlimited variations with one click
Branch seam blending
Sub-division surface modeling
Add collision primitives automatically or manually
Modeling with mesh forces (e.g. grow trees around or through 3D meshes)
Much more! See our online Modeler documentation for complete details.